21628750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^3\times {\mathrm{13}}^1$

素因数の和:68

約数の個数: 80

約数和(自身を含む): 48022128

約数和(自身を除く): 26393378

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 121, 125, 130, 143, 242, 250, 275, 286, 325, 550, 605, 625, 650, 715, 1210, 1250, 1331, 1375, 1430, 1573, 1625, 2662, 2750, 3025, 3146, 3250, 3575, 6050, 6655, 6875, 7150, 7865, 8125, 13310, 13750, 15125, 15730, 16250, 17303, 17875, 30250, 33275, 34606, 35750, 39325, 66550, 75625, 78650, 86515, 89375, 151250, 166375, 173030, 178750, 196625, 332750, 393250, 432575, 831875, 865150, 983125, 1663750, 1966250, 2162875, 4325750, 10814375, 21628750]

約数ペア:

[(1, 21628750), (2, 10814375), (5, 4325750), (10, 2162875), (11, 1966250), (13, 1663750), (22, 983125), (25, 865150), (26, 831875), (50, 432575), (55, 393250), (65, 332750), (110, 196625), (121, 178750), (125, 173030), (130, 166375), (143, 151250), (242, 89375), (250, 86515), (275, 78650), (286, 75625), (325, 66550), (550, 39325), (605, 35750), (625, 34606), (650, 33275), (715, 30250), (1210, 17875), (1250, 17303), (1331, 16250), (1375, 15730), (1430, 15125), (1573, 13750), (1625, 13310), (2662, 8125), (2750, 7865), (3025, 7150), (3146, 6875), (3250, 6655), (3575, 6050)]