19913120

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7321}}^1$

素因数の和:7353

約数の個数: 48

約数和(自身を含む): 49818888

約数和(自身を除く): 29905768

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, 7321, 14642, 29284, 36605, 58568, 73210, 117136, 124457, 146420, 234272, 248914, 292840, 497828, 585680, 622285, 995656, 1171360, 1244570, 1991312, 2489140, 3982624, 4978280, 9956560, 19913120]

約数ペア:

[(1, 19913120), (2, 9956560), (4, 4978280), (5, 3982624), (8, 2489140), (10, 1991312), (16, 1244570), (17, 1171360), (20, 995656), (32, 622285), (34, 585680), (40, 497828), (68, 292840), (80, 248914), (85, 234272), (136, 146420), (160, 124457), (170, 117136), (272, 73210), (340, 58568), (544, 36605), (680, 29284), (1360, 14642), (2720, 7321)]