138835280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{379}}^1$

素因数の和:652

約数の個数: 80

約数和(自身を含む): 342091200

約数和(自身を除く): 203255920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 241, 304, 379, 380, 482, 758, 760, 964, 1205, 1516, 1520, 1895, 1928, 2410, 3032, 3790, 3856, 4579, 4820, 6064, 7201, 7580, 9158, 9640, 14402, 15160, 18316, 19280, 22895, 28804, 30320, 36005, 36632, 45790, 57608, 72010, 73264, 91339, 91580, 115216, 144020, 182678, 183160, 288040, 365356, 366320, 456695, 576080, 730712, 913390, 1461424, 1735441, 1826780, 3470882, 3653560, 6941764, 7307120, 8677205, 13883528, 17354410, 27767056, 34708820, 69417640, 138835280]

約数ペア:

[(1, 138835280), (2, 69417640), (4, 34708820), (5, 27767056), (8, 17354410), (10, 13883528), (16, 8677205), (19, 7307120), (20, 6941764), (38, 3653560), (40, 3470882), (76, 1826780), (80, 1735441), (95, 1461424), (152, 913390), (190, 730712), (241, 576080), (304, 456695), (379, 366320), (380, 365356), (482, 288040), (758, 183160), (760, 182678), (964, 144020), (1205, 115216), (1516, 91580), (1520, 91339), (1895, 73264), (1928, 72010), (2410, 57608), (3032, 45790), (3790, 36632), (3856, 36005), (4579, 30320), (4820, 28804), (6064, 22895), (7201, 19280), (7580, 18316), (9158, 15160), (9640, 14402)]