16405777720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1019}}^1\times {\mathrm{9817}}^1$

素因数の和:10888

約数の個数: 64

約数和(自身を含む): 37854280800

約数和(自身を除く): 21448503080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1019, 1640, 2038, 4076, 5095, 8152, 9817, 10190, 19634, 20380, 39268, 40760, 41779, 49085, 78536, 83558, 98170, 167116, 196340, 208895, 334232, 392680, 402497, 417790, 804994, 835580, 1609988, 1671160, 2012485, 3219976, 4024970, 8049940, 10003523, 16099880, 20007046, 40014092, 50017615, 80028184, 100035230, 200070460, 400140920, 410144443, 820288886, 1640577772, 2050722215, 3281155544, 4101444430, 8202888860, 16405777720]

約数ペア:

[(1, 16405777720), (2, 8202888860), (4, 4101444430), (5, 3281155544), (8, 2050722215), (10, 1640577772), (20, 820288886), (40, 410144443), (41, 400140920), (82, 200070460), (164, 100035230), (205, 80028184), (328, 50017615), (410, 40014092), (820, 20007046), (1019, 16099880), (1640, 10003523), (2038, 8049940), (4076, 4024970), (5095, 3219976), (8152, 2012485), (9817, 1671160), (10190, 1609988), (19634, 835580), (20380, 804994), (39268, 417790), (40760, 402497), (41779, 392680), (49085, 334232), (78536, 208895), (83558, 196340), (98170, 167116)]