15947020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 37134720

約数和(自身を除く): 21187700

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 89, 124, 155, 170, 178, 289, 310, 340, 356, 445, 527, 578, 620, 890, 1054, 1156, 1445, 1513, 1780, 2108, 2635, 2759, 2890, 3026, 5270, 5518, 5780, 6052, 7565, 8959, 10540, 11036, 13795, 15130, 17918, 25721, 27590, 30260, 35836, 44795, 46903, 51442, 55180, 89590, 93806, 102884, 128605, 179180, 187612, 234515, 257210, 469030, 514420, 797351, 938060, 1594702, 3189404, 3986755, 7973510, 15947020]

約数ペア:

[(1, 15947020), (2, 7973510), (4, 3986755), (5, 3189404), (10, 1594702), (17, 938060), (20, 797351), (31, 514420), (34, 469030), (62, 257210), (68, 234515), (85, 187612), (89, 179180), (124, 128605), (155, 102884), (170, 93806), (178, 89590), (289, 55180), (310, 51442), (340, 46903), (356, 44795), (445, 35836), (527, 30260), (578, 27590), (620, 25721), (890, 17918), (1054, 15130), (1156, 13795), (1445, 11036), (1513, 10540), (1780, 8959), (2108, 7565), (2635, 6052), (2759, 5780), (2890, 5518), (3026, 5270)]