400020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 1149120

約数和(自身を除く): 749100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 59, 60, 113, 118, 177, 226, 236, 295, 339, 354, 452, 565, 590, 678, 708, 885, 1130, 1180, 1356, 1695, 1770, 2260, 3390, 3540, 6667, 6780, 13334, 20001, 26668, 33335, 40002, 66670, 80004, 100005, 133340, 200010, 400020]

約数ペア:

[(1, 400020), (2, 200010), (3, 133340), (4, 100005), (5, 80004), (6, 66670), (10, 40002), (12, 33335), (15, 26668), (20, 20001), (30, 13334), (59, 6780), (60, 6667), (113, 3540), (118, 3390), (177, 2260), (226, 1770), (236, 1695), (295, 1356), (339, 1180), (354, 1130), (452, 885), (565, 708), (590, 678)]