15221120

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1399}}^1$

素因数の和:1435

約数の個数: 64

約数和(自身を含む): 38556000

約数和(自身を除く): 23334880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 1399, 2176, 2720, 2798, 5440, 5596, 6995, 10880, 11192, 13990, 22384, 23783, 27980, 44768, 47566, 55960, 89536, 95132, 111920, 118915, 179072, 190264, 223840, 237830, 380528, 447680, 475660, 761056, 895360, 951320, 1522112, 1902640, 3044224, 3805280, 7610560, 15221120]

約数ペア:

[(1, 15221120), (2, 7610560), (4, 3805280), (5, 3044224), (8, 1902640), (10, 1522112), (16, 951320), (17, 895360), (20, 761056), (32, 475660), (34, 447680), (40, 380528), (64, 237830), (68, 223840), (80, 190264), (85, 179072), (128, 118915), (136, 111920), (160, 95132), (170, 89536), (272, 55960), (320, 47566), (340, 44768), (544, 27980), (640, 23783), (680, 22384), (1088, 13990), (1360, 11192), (1399, 10880), (2176, 6995), (2720, 5596), (2798, 5440)]