19887910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 43182720

約数和(自身を除く): 23294810

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 97, 101, 145, 194, 202, 203, 290, 406, 485, 505, 679, 707, 970, 1010, 1015, 1358, 1414, 2030, 2813, 2929, 3395, 3535, 5626, 5858, 6790, 7070, 9797, 14065, 14645, 19594, 19691, 20503, 28130, 29290, 39382, 41006, 48985, 68579, 97970, 98455, 102515, 137158, 196910, 205030, 284113, 342895, 568226, 685790, 1420565, 1988791, 2841130, 3977582, 9943955, 19887910]

約数ペア:

[(1, 19887910), (2, 9943955), (5, 3977582), (7, 2841130), (10, 1988791), (14, 1420565), (29, 685790), (35, 568226), (58, 342895), (70, 284113), (97, 205030), (101, 196910), (145, 137158), (194, 102515), (202, 98455), (203, 97970), (290, 68579), (406, 48985), (485, 41006), (505, 39382), (679, 29290), (707, 28130), (970, 20503), (1010, 19691), (1015, 19594), (1358, 14645), (1414, 14065), (2030, 9797), (2813, 7070), (2929, 6790), (3395, 5858), (3535, 5626)]