25244240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{739}}^1$

素因数の和:820

約数の個数: 80

約数和(自身を含む): 68269440

約数和(自身を除く): 43025200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 739, 854, 976, 1220, 1478, 1708, 2135, 2440, 2956, 3416, 3695, 4270, 4880, 5173, 5912, 6832, 7390, 8540, 10346, 11824, 14780, 17080, 20692, 25865, 29560, 34160, 41384, 45079, 51730, 59120, 82768, 90158, 103460, 180316, 206920, 225395, 315553, 360632, 413840, 450790, 631106, 721264, 901580, 1262212, 1577765, 1803160, 2524424, 3155530, 3606320, 5048848, 6311060, 12622120, 25244240]

約数ペア:

[(1, 25244240), (2, 12622120), (4, 6311060), (5, 5048848), (7, 3606320), (8, 3155530), (10, 2524424), (14, 1803160), (16, 1577765), (20, 1262212), (28, 901580), (35, 721264), (40, 631106), (56, 450790), (61, 413840), (70, 360632), (80, 315553), (112, 225395), (122, 206920), (140, 180316), (244, 103460), (280, 90158), (305, 82768), (427, 59120), (488, 51730), (560, 45079), (610, 41384), (739, 34160), (854, 29560), (976, 25865), (1220, 20692), (1478, 17080), (1708, 14780), (2135, 11824), (2440, 10346), (2956, 8540), (3416, 7390), (3695, 6832), (4270, 5912), (4880, 5173)]