20237490

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 144

約数和(自身を含む): 66103128

約数和(自身を除く): 45865638

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 13, 14, 15, 18, 21, 26, 30, 35, 39, 42, 45, 49, 63, 65, 70, 78, 90, 91, 98, 105, 117, 126, 130, 147, 182, 195, 210, 234, 245, 273, 294, 315, 353, 390, 441, 455, 490, 546, 585, 630, 637, 706, 735, 819, 882, 910, 1059, 1170, 1274, 1365, 1470, 1638, 1765, 1911, 2118, 2205, 2471, 2730, 3177, 3185, 3530, 3822, 4095, 4410, 4589, 4942, 5295, 5733, 6354, 6370, 7413, 8190, 9178, 9555, 10590, 11466, 12355, 13767, 14826, 15885, 17297, 19110, 22239, 22945, 24710, 27534, 28665, 31770, 32123, 34594, 37065, 41301, 44478, 45890, 51891, 57330, 64246, 68835, 74130, 82602, 86485, 96369, 103782, 111195, 137670, 155673, 160615, 172970, 192738, 206505, 222390, 224861, 259455, 289107, 311346, 321230, 413010, 449722, 481845, 518910, 578214, 674583, 778365, 963690, 1124305, 1349166, 1445535, 1556730, 2023749, 2248610, 2891070, 3372915, 4047498, 6745830, 10118745, 20237490]

約数ペア:

[(1, 20237490), (2, 10118745), (3, 6745830), (5, 4047498), (6, 3372915), (7, 2891070), (9, 2248610), (10, 2023749), (13, 1556730), (14, 1445535), (15, 1349166), (18, 1124305), (21, 963690), (26, 778365), (30, 674583), (35, 578214), (39, 518910), (42, 481845), (45, 449722), (49, 413010), (63, 321230), (65, 311346), (70, 289107), (78, 259455), (90, 224861), (91, 222390), (98, 206505), (105, 192738), (117, 172970), (126, 160615), (130, 155673), (147, 137670), (182, 111195), (195, 103782), (210, 96369), (234, 86485), (245, 82602), (273, 74130), (294, 68835), (315, 64246), (353, 57330), (390, 51891), (441, 45890), (455, 44478), (490, 41301), (546, 37065), (585, 34594), (630, 32123), (637, 31770), (706, 28665), (735, 27534), (819, 24710), (882, 22945), (910, 22239), (1059, 19110), (1170, 17297), (1274, 15885), (1365, 14826), (1470, 13767), (1638, 12355), (1765, 11466), (1911, 10590), (2118, 9555), (2205, 9178), (2471, 8190), (2730, 7413), (3177, 6370), (3185, 6354), (3530, 5733), (3822, 5295), (4095, 4942), (4410, 4589)]