28655000

素因数分解:

$2^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{521}}^1$

素因数の和:558

約数の個数: 80

約数和(自身を含む): 73382760

約数和(自身を除く): 44727760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 521, 550, 625, 1000, 1042, 1100, 1250, 1375, 2084, 2200, 2500, 2605, 2750, 4168, 5000, 5210, 5500, 5731, 6875, 10420, 11000, 11462, 13025, 13750, 20840, 22924, 26050, 27500, 28655, 45848, 52100, 55000, 57310, 65125, 104200, 114620, 130250, 143275, 229240, 260500, 286550, 325625, 521000, 573100, 651250, 716375, 1146200, 1302500, 1432750, 2605000, 2865500, 3581875, 5731000, 7163750, 14327500, 28655000]

約数ペア:

[(1, 28655000), (2, 14327500), (4, 7163750), (5, 5731000), (8, 3581875), (10, 2865500), (11, 2605000), (20, 1432750), (22, 1302500), (25, 1146200), (40, 716375), (44, 651250), (50, 573100), (55, 521000), (88, 325625), (100, 286550), (110, 260500), (125, 229240), (200, 143275), (220, 130250), (250, 114620), (275, 104200), (440, 65125), (500, 57310), (521, 55000), (550, 52100), (625, 45848), (1000, 28655), (1042, 27500), (1100, 26050), (1250, 22924), (1375, 20840), (2084, 13750), (2200, 13025), (2500, 11462), (2605, 11000), (2750, 10420), (4168, 6875), (5000, 5731), (5210, 5500)]