20786240

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3821}}^1$

素因数の和:3855

約数の個数: 56

約数和(自身を含む): 52422552

約数和(自身を除く): 31636312

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3821, 5440, 7642, 15284, 19105, 30568, 38210, 61136, 64957, 76420, 122272, 129914, 152840, 244544, 259828, 305680, 324785, 519656, 611360, 649570, 1039312, 1222720, 1299140, 2078624, 2598280, 4157248, 5196560, 10393120, 20786240]

約数ペア:

[(1, 20786240), (2, 10393120), (4, 5196560), (5, 4157248), (8, 2598280), (10, 2078624), (16, 1299140), (17, 1222720), (20, 1039312), (32, 649570), (34, 611360), (40, 519656), (64, 324785), (68, 305680), (80, 259828), (85, 244544), (136, 152840), (160, 129914), (170, 122272), (272, 76420), (320, 64957), (340, 61136), (544, 38210), (680, 30568), (1088, 19105), (1360, 15284), (2720, 7642), (3821, 5440)]