20820960

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:801

約数の個数: 144

約数和(自身を含む): 74889360

約数和(自身を除く): 54068400

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, 761, 855, 912, 1140, 1368, 1440, 1520, 1522, 1710, 1824, 2280, 2283, 2736, 3040, 3044, 3420, 3805, 4560, 4566, 5472, 6088, 6840, 6849, 7610, 9120, 9132, 11415, 12176, 13680, 13698, 14459, 15220, 18264, 22830, 24352, 27360, 27396, 28918, 30440, 34245, 36528, 43377, 45660, 54792, 57836, 60880, 68490, 72295, 73056, 86754, 91320, 109584, 115672, 121760, 130131, 136980, 144590, 173508, 182640, 216885, 219168, 231344, 260262, 273960, 289180, 347016, 365280, 433770, 462688, 520524, 547920, 578360, 650655, 694032, 867540, 1041048, 1095840, 1156720, 1301310, 1388064, 1735080, 2082096, 2313440, 2602620, 3470160, 4164192, 5205240, 6940320, 10410480, 20820960]

約数ペア:

[(1, 20820960), (2, 10410480), (3, 6940320), (4, 5205240), (5, 4164192), (6, 3470160), (8, 2602620), (9, 2313440), (10, 2082096), (12, 1735080), (15, 1388064), (16, 1301310), (18, 1156720), (19, 1095840), (20, 1041048), (24, 867540), (30, 694032), (32, 650655), (36, 578360), (38, 547920), (40, 520524), (45, 462688), (48, 433770), (57, 365280), (60, 347016), (72, 289180), (76, 273960), (80, 260262), (90, 231344), (95, 219168), (96, 216885), (114, 182640), (120, 173508), (144, 144590), (152, 136980), (160, 130131), (171, 121760), (180, 115672), (190, 109584), (228, 91320), (240, 86754), (285, 73056), (288, 72295), (304, 68490), (342, 60880), (360, 57836), (380, 54792), (456, 45660), (480, 43377), (570, 36528), (608, 34245), (684, 30440), (720, 28918), (760, 27396), (761, 27360), (855, 24352), (912, 22830), (1140, 18264), (1368, 15220), (1440, 14459), (1520, 13698), (1522, 13680), (1710, 12176), (1824, 11415), (2280, 9132), (2283, 9120), (2736, 7610), (3040, 6849), (3044, 6840), (3420, 6088), (3805, 5472), (4560, 4566)]