21149280

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{773}}^1$

素因数の和:813

約数の個数: 144

約数和(自身を含む): 76068720

約数和(自身を除く): 54919440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 32, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 96, 114, 120, 144, 152, 160, 171, 180, 190, 228, 240, 285, 288, 304, 342, 360, 380, 456, 480, 570, 608, 684, 720, 760, 773, 855, 912, 1140, 1368, 1440, 1520, 1546, 1710, 1824, 2280, 2319, 2736, 3040, 3092, 3420, 3865, 4560, 4638, 5472, 6184, 6840, 6957, 7730, 9120, 9276, 11595, 12368, 13680, 13914, 14687, 15460, 18552, 23190, 24736, 27360, 27828, 29374, 30920, 34785, 37104, 44061, 46380, 55656, 58748, 61840, 69570, 73435, 74208, 88122, 92760, 111312, 117496, 123680, 132183, 139140, 146870, 176244, 185520, 220305, 222624, 234992, 264366, 278280, 293740, 352488, 371040, 440610, 469984, 528732, 556560, 587480, 660915, 704976, 881220, 1057464, 1113120, 1174960, 1321830, 1409952, 1762440, 2114928, 2349920, 2643660, 3524880, 4229856, 5287320, 7049760, 10574640, 21149280]

約数ペア:

[(1, 21149280), (2, 10574640), (3, 7049760), (4, 5287320), (5, 4229856), (6, 3524880), (8, 2643660), (9, 2349920), (10, 2114928), (12, 1762440), (15, 1409952), (16, 1321830), (18, 1174960), (19, 1113120), (20, 1057464), (24, 881220), (30, 704976), (32, 660915), (36, 587480), (38, 556560), (40, 528732), (45, 469984), (48, 440610), (57, 371040), (60, 352488), (72, 293740), (76, 278280), (80, 264366), (90, 234992), (95, 222624), (96, 220305), (114, 185520), (120, 176244), (144, 146870), (152, 139140), (160, 132183), (171, 123680), (180, 117496), (190, 111312), (228, 92760), (240, 88122), (285, 74208), (288, 73435), (304, 69570), (342, 61840), (360, 58748), (380, 55656), (456, 46380), (480, 44061), (570, 37104), (608, 34785), (684, 30920), (720, 29374), (760, 27828), (773, 27360), (855, 24736), (912, 23190), (1140, 18552), (1368, 15460), (1440, 14687), (1520, 13914), (1546, 13680), (1710, 12368), (1824, 11595), (2280, 9276), (2319, 9120), (2736, 7730), (3040, 6957), (3092, 6840), (3420, 6184), (3865, 5472), (4560, 4638)]