21108240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1543}}^1$

素因数の和:1581

約数の個数: 120

約数和(自身を含む): 74667840

約数和(自身を除く): 53559600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 380, 456, 570, 684, 720, 760, 855, 912, 1140, 1368, 1520, 1543, 1710, 2280, 2736, 3086, 3420, 4560, 4629, 6172, 6840, 7715, 9258, 12344, 13680, 13887, 15430, 18516, 23145, 24688, 27774, 29317, 30860, 37032, 46290, 55548, 58634, 61720, 69435, 74064, 87951, 92580, 111096, 117268, 123440, 138870, 146585, 175902, 185160, 222192, 234536, 263853, 277740, 293170, 351804, 370320, 439755, 469072, 527706, 555480, 586340, 703608, 879510, 1055412, 1110960, 1172680, 1319265, 1407216, 1759020, 2110824, 2345360, 2638530, 3518040, 4221648, 5277060, 7036080, 10554120, 21108240]

約数ペア:

[(1, 21108240), (2, 10554120), (3, 7036080), (4, 5277060), (5, 4221648), (6, 3518040), (8, 2638530), (9, 2345360), (10, 2110824), (12, 1759020), (15, 1407216), (16, 1319265), (18, 1172680), (19, 1110960), (20, 1055412), (24, 879510), (30, 703608), (36, 586340), (38, 555480), (40, 527706), (45, 469072), (48, 439755), (57, 370320), (60, 351804), (72, 293170), (76, 277740), (80, 263853), (90, 234536), (95, 222192), (114, 185160), (120, 175902), (144, 146585), (152, 138870), (171, 123440), (180, 117268), (190, 111096), (228, 92580), (240, 87951), (285, 74064), (304, 69435), (342, 61720), (360, 58634), (380, 55548), (456, 46290), (570, 37032), (684, 30860), (720, 29317), (760, 27774), (855, 24688), (912, 23145), (1140, 18516), (1368, 15430), (1520, 13887), (1543, 13680), (1710, 12344), (2280, 9258), (2736, 7715), (3086, 6840), (3420, 6172), (4560, 4629)]