21874840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:137

約数の個数: 128

約数和(自身を含む): 58060800

約数和(自身を除く): 36185960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 31, 40, 46, 52, 59, 62, 65, 92, 104, 115, 118, 124, 130, 155, 184, 230, 236, 248, 260, 295, 299, 310, 403, 460, 472, 520, 590, 598, 620, 713, 767, 806, 920, 1180, 1196, 1240, 1357, 1426, 1495, 1534, 1612, 1829, 2015, 2360, 2392, 2714, 2852, 2990, 3068, 3224, 3565, 3658, 3835, 4030, 5428, 5704, 5980, 6136, 6785, 7130, 7316, 7670, 8060, 9145, 9269, 10856, 11960, 13570, 14260, 14632, 15340, 16120, 17641, 18290, 18538, 23777, 27140, 28520, 30680, 35282, 36580, 37076, 42067, 46345, 47554, 54280, 70564, 73160, 74152, 84134, 88205, 92690, 95108, 118885, 141128, 168268, 176410, 185380, 190216, 210335, 237770, 336536, 352820, 370760, 420670, 475540, 546871, 705640, 841340, 951080, 1093742, 1682680, 2187484, 2734355, 4374968, 5468710, 10937420, 21874840]

約数ペア:

[(1, 21874840), (2, 10937420), (4, 5468710), (5, 4374968), (8, 2734355), (10, 2187484), (13, 1682680), (20, 1093742), (23, 951080), (26, 841340), (31, 705640), (40, 546871), (46, 475540), (52, 420670), (59, 370760), (62, 352820), (65, 336536), (92, 237770), (104, 210335), (115, 190216), (118, 185380), (124, 176410), (130, 168268), (155, 141128), (184, 118885), (230, 95108), (236, 92690), (248, 88205), (260, 84134), (295, 74152), (299, 73160), (310, 70564), (403, 54280), (460, 47554), (472, 46345), (520, 42067), (590, 37076), (598, 36580), (620, 35282), (713, 30680), (767, 28520), (806, 27140), (920, 23777), (1180, 18538), (1196, 18290), (1240, 17641), (1357, 16120), (1426, 15340), (1495, 14632), (1534, 14260), (1612, 13570), (1829, 11960), (2015, 10856), (2360, 9269), (2392, 9145), (2714, 8060), (2852, 7670), (2990, 7316), (3068, 7130), (3224, 6785), (3565, 6136), (3658, 5980), (3835, 5704), (4030, 5428)]