20168754440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{723413}}^1$

素因数の和:723482

約数の個数: 64

約数和(自身を含む): 49221088560

約数和(自身を除く): 29052334120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 680, 697, 820, 1394, 1640, 2788, 3485, 5576, 6970, 13940, 27880, 723413, 1446826, 2893652, 3617065, 5787304, 7234130, 12298021, 14468260, 24596042, 28936520, 29659933, 49192084, 59319866, 61490105, 98384168, 118639732, 122980210, 148299665, 237279464, 245960420, 296599330, 491920840, 504218861, 593198660, 1008437722, 1186397320, 2016875444, 2521094305, 4033750888, 5042188610, 10084377220, 20168754440]

約数ペア:

[(1, 20168754440), (2, 10084377220), (4, 5042188610), (5, 4033750888), (8, 2521094305), (10, 2016875444), (17, 1186397320), (20, 1008437722), (34, 593198660), (40, 504218861), (41, 491920840), (68, 296599330), (82, 245960420), (85, 237279464), (136, 148299665), (164, 122980210), (170, 118639732), (205, 98384168), (328, 61490105), (340, 59319866), (410, 49192084), (680, 29659933), (697, 28936520), (820, 24596042), (1394, 14468260), (1640, 12298021), (2788, 7234130), (3485, 5787304), (5576, 3617065), (6970, 2893652), (13940, 1446826), (27880, 723413)]