21502920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 68947200

約数和(自身を除く): 47444280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 37, 40, 58, 60, 74, 87, 111, 116, 120, 145, 148, 167, 174, 185, 222, 232, 290, 296, 334, 348, 370, 435, 444, 501, 555, 580, 668, 696, 740, 835, 870, 888, 1002, 1073, 1110, 1160, 1336, 1480, 1670, 1740, 2004, 2146, 2220, 2505, 3219, 3340, 3480, 4008, 4292, 4440, 4843, 5010, 5365, 6179, 6438, 6680, 8584, 9686, 10020, 10730, 12358, 12876, 14529, 16095, 18537, 19372, 20040, 21460, 24215, 24716, 25752, 29058, 30895, 32190, 37074, 38744, 42920, 48430, 49432, 58116, 61790, 64380, 72645, 74148, 92685, 96860, 116232, 123580, 128760, 145290, 148296, 179191, 185370, 193720, 247160, 290580, 358382, 370740, 537573, 581160, 716764, 741480, 895955, 1075146, 1433528, 1791910, 2150292, 2687865, 3583820, 4300584, 5375730, 7167640, 10751460, 21502920]

約数ペア:

[(1, 21502920), (2, 10751460), (3, 7167640), (4, 5375730), (5, 4300584), (6, 3583820), (8, 2687865), (10, 2150292), (12, 1791910), (15, 1433528), (20, 1075146), (24, 895955), (29, 741480), (30, 716764), (37, 581160), (40, 537573), (58, 370740), (60, 358382), (74, 290580), (87, 247160), (111, 193720), (116, 185370), (120, 179191), (145, 148296), (148, 145290), (167, 128760), (174, 123580), (185, 116232), (222, 96860), (232, 92685), (290, 74148), (296, 72645), (334, 64380), (348, 61790), (370, 58116), (435, 49432), (444, 48430), (501, 42920), (555, 38744), (580, 37074), (668, 32190), (696, 30895), (740, 29058), (835, 25752), (870, 24716), (888, 24215), (1002, 21460), (1073, 20040), (1110, 19372), (1160, 18537), (1336, 16095), (1480, 14529), (1670, 12876), (1740, 12358), (2004, 10730), (2146, 10020), (2220, 9686), (2505, 8584), (3219, 6680), (3340, 6438), (3480, 6179), (4008, 5365), (4292, 5010), (4440, 4843)]