19156280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:249

約数の個数: 128

約数和(自身を含む): 53887680

約数和(自身を除く): 34731400

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 17, 20, 22, 26, 34, 40, 44, 52, 55, 65, 68, 85, 88, 104, 110, 130, 136, 143, 170, 187, 197, 220, 221, 260, 286, 340, 374, 394, 440, 442, 520, 572, 680, 715, 748, 788, 884, 935, 985, 1105, 1144, 1430, 1496, 1576, 1768, 1870, 1970, 2167, 2210, 2431, 2561, 2860, 3349, 3740, 3940, 4334, 4420, 4862, 5122, 5720, 6698, 7480, 7880, 8668, 8840, 9724, 10244, 10835, 12155, 12805, 13396, 16745, 17336, 19448, 20488, 21670, 24310, 25610, 26792, 28171, 33490, 36839, 43340, 43537, 48620, 51220, 56342, 66980, 73678, 86680, 87074, 97240, 102440, 112684, 133960, 140855, 147356, 174148, 184195, 217685, 225368, 281710, 294712, 348296, 368390, 435370, 478907, 563420, 736780, 870740, 957814, 1126840, 1473560, 1741480, 1915628, 2394535, 3831256, 4789070, 9578140, 19156280]

約数ペア:

[(1, 19156280), (2, 9578140), (4, 4789070), (5, 3831256), (8, 2394535), (10, 1915628), (11, 1741480), (13, 1473560), (17, 1126840), (20, 957814), (22, 870740), (26, 736780), (34, 563420), (40, 478907), (44, 435370), (52, 368390), (55, 348296), (65, 294712), (68, 281710), (85, 225368), (88, 217685), (104, 184195), (110, 174148), (130, 147356), (136, 140855), (143, 133960), (170, 112684), (187, 102440), (197, 97240), (220, 87074), (221, 86680), (260, 73678), (286, 66980), (340, 56342), (374, 51220), (394, 48620), (440, 43537), (442, 43340), (520, 36839), (572, 33490), (680, 28171), (715, 26792), (748, 25610), (788, 24310), (884, 21670), (935, 20488), (985, 19448), (1105, 17336), (1144, 16745), (1430, 13396), (1496, 12805), (1576, 12155), (1768, 10835), (1870, 10244), (1970, 9724), (2167, 8840), (2210, 8668), (2431, 7880), (2561, 7480), (2860, 6698), (3349, 5720), (3740, 5122), (3940, 4862), (4334, 4420)]