81085920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{523}}^1$

素因数の和:577

約数の個数: 192

約数和(自身を含む): 285223680

約数和(自身を除く): 204137760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 19, 20, 24, 30, 32, 34, 38, 40, 48, 51, 57, 60, 68, 76, 80, 85, 95, 96, 102, 114, 120, 136, 152, 160, 170, 190, 204, 228, 240, 255, 272, 285, 304, 323, 340, 380, 408, 456, 480, 510, 523, 544, 570, 608, 646, 680, 760, 816, 912, 969, 1020, 1046, 1140, 1292, 1360, 1520, 1569, 1615, 1632, 1824, 1938, 2040, 2092, 2280, 2584, 2615, 2720, 3040, 3138, 3230, 3876, 4080, 4184, 4560, 4845, 5168, 5230, 6276, 6460, 7752, 7845, 8160, 8368, 8891, 9120, 9690, 9937, 10336, 10460, 12552, 12920, 15504, 15690, 16736, 17782, 19380, 19874, 20920, 25104, 25840, 26673, 29811, 31008, 31380, 35564, 38760, 39748, 41840, 44455, 49685, 50208, 51680, 53346, 59622, 62760, 71128, 77520, 79496, 83680, 88910, 99370, 106692, 119244, 125520, 133365, 142256, 149055, 155040, 158992, 168929, 177820, 198740, 213384, 238488, 251040, 266730, 284512, 298110, 317984, 337858, 355640, 397480, 426768, 476976, 506787, 533460, 596220, 675716, 711280, 794960, 844645, 853536, 953952, 1013574, 1066920, 1192440, 1351432, 1422560, 1589920, 1689290, 2027148, 2133840, 2384880, 2533935, 2702864, 3378580, 4054296, 4267680, 4769760, 5067870, 5405728, 6757160, 8108592, 10135740, 13514320, 16217184, 20271480, 27028640, 40542960, 81085920]

約数ペア:

[(1, 81085920), (2, 40542960), (3, 27028640), (4, 20271480), (5, 16217184), (6, 13514320), (8, 10135740), (10, 8108592), (12, 6757160), (15, 5405728), (16, 5067870), (17, 4769760), (19, 4267680), (20, 4054296), (24, 3378580), (30, 2702864), (32, 2533935), (34, 2384880), (38, 2133840), (40, 2027148), (48, 1689290), (51, 1589920), (57, 1422560), (60, 1351432), (68, 1192440), (76, 1066920), (80, 1013574), (85, 953952), (95, 853536), (96, 844645), (102, 794960), (114, 711280), (120, 675716), (136, 596220), (152, 533460), (160, 506787), (170, 476976), (190, 426768), (204, 397480), (228, 355640), (240, 337858), (255, 317984), (272, 298110), (285, 284512), (304, 266730), (323, 251040), (340, 238488), (380, 213384), (408, 198740), (456, 177820), (480, 168929), (510, 158992), (523, 155040), (544, 149055), (570, 142256), (608, 133365), (646, 125520), (680, 119244), (760, 106692), (816, 99370), (912, 88910), (969, 83680), (1020, 79496), (1046, 77520), (1140, 71128), (1292, 62760), (1360, 59622), (1520, 53346), (1569, 51680), (1615, 50208), (1632, 49685), (1824, 44455), (1938, 41840), (2040, 39748), (2092, 38760), (2280, 35564), (2584, 31380), (2615, 31008), (2720, 29811), (3040, 26673), (3138, 25840), (3230, 25104), (3876, 20920), (4080, 19874), (4184, 19380), (4560, 17782), (4845, 16736), (5168, 15690), (5230, 15504), (6276, 12920), (6460, 12552), (7752, 10460), (7845, 10336), (8160, 9937), (8368, 9690), (8891, 9120)]