18349375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:205

約数の個数: 40

約数和(自身を含む): 26653968

約数和(自身を除く): 8304593

約数列:

[1, 5, 11, 17, 25, 55, 85, 125, 157, 187, 275, 425, 625, 785, 935, 1375, 1727, 2125, 2669, 3925, 4675, 6875, 8635, 10625, 13345, 19625, 23375, 29359, 43175, 66725, 98125, 116875, 146795, 215875, 333625, 733975, 1079375, 1668125, 3669875, 18349375]

約数ペア:

[(1, 18349375), (5, 3669875), (11, 1668125), (17, 1079375), (25, 733975), (55, 333625), (85, 215875), (125, 146795), (157, 116875), (187, 98125), (275, 66725), (425, 43175), (625, 29359), (785, 23375), (935, 19625), (1375, 13345), (1727, 10625), (2125, 8635), (2669, 6875), (3925, 4675)]