28202500

素因数分解:

$2^2\times 5^4\times {\mathrm{29}}^1\times {\mathrm{389}}^1$

素因数の和:442

約数の個数: 60

約数和(自身を含む): 63963900

約数和(自身を除く): 35761400

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 290, 389, 500, 580, 625, 725, 778, 1250, 1450, 1556, 1945, 2500, 2900, 3625, 3890, 7250, 7780, 9725, 11281, 14500, 18125, 19450, 22562, 36250, 38900, 45124, 48625, 56405, 72500, 97250, 112810, 194500, 225620, 243125, 282025, 486250, 564050, 972500, 1128100, 1410125, 2820250, 5640500, 7050625, 14101250, 28202500]

約数ペア:

[(1, 28202500), (2, 14101250), (4, 7050625), (5, 5640500), (10, 2820250), (20, 1410125), (25, 1128100), (29, 972500), (50, 564050), (58, 486250), (100, 282025), (116, 243125), (125, 225620), (145, 194500), (250, 112810), (290, 97250), (389, 72500), (500, 56405), (580, 48625), (625, 45124), (725, 38900), (778, 36250), (1250, 22562), (1450, 19450), (1556, 18125), (1945, 14500), (2500, 11281), (2900, 9725), (3625, 7780), (3890, 7250)]