20793480020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{170243}}^1$

素因数の和:170480

約数の個数: 48

約数和(自身を含む): 45303971328

約数和(自身を除く): 24510491308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 197, 310, 394, 620, 788, 985, 1970, 3940, 6107, 12214, 24428, 30535, 61070, 122140, 170243, 340486, 680972, 851215, 1702430, 3404860, 5277533, 10555066, 21110132, 26387665, 33537871, 52775330, 67075742, 105550660, 134151484, 167689355, 335378710, 670757420, 1039674001, 2079348002, 4158696004, 5198370005, 10396740010, 20793480020]

約数ペア:

[(1, 20793480020), (2, 10396740010), (4, 5198370005), (5, 4158696004), (10, 2079348002), (20, 1039674001), (31, 670757420), (62, 335378710), (124, 167689355), (155, 134151484), (197, 105550660), (310, 67075742), (394, 52775330), (620, 33537871), (788, 26387665), (985, 21110132), (1970, 10555066), (3940, 5277533), (6107, 3404860), (12214, 1702430), (24428, 851215), (30535, 680972), (61070, 340486), (122140, 170243)]