21196960

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7793}}^1$

素因数の和:7825

約数の個数: 48

約数和(自身を含む): 53030376

約数和(自身を除く): 31833416

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7793, 15586, 31172, 38965, 62344, 77930, 124688, 132481, 155860, 249376, 264962, 311720, 529924, 623440, 662405, 1059848, 1246880, 1324810, 2119696, 2649620, 4239392, 5299240, 10598480, 21196960]

約数ペア:

[(1, 21196960), (2, 10598480), (4, 5299240), (5, 4239392), (8, 2649620), (10, 2119696), (16, 1324810), (17, 1246880), (20, 1059848), (32, 662405), (34, 623440), (40, 529924), (68, 311720), (80, 264962), (85, 249376), (136, 155860), (160, 132481), (170, 124688), (272, 77930), (340, 62344), (544, 38965), (680, 31172), (1360, 15586), (2720, 7793)]