19662500

素因数分解:

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

素因数の和:64

約数の個数: 108

約数和(自身を含む): 50910804

約数和(自身を除く): 31248304

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 121, 125, 130, 143, 220, 242, 250, 260, 275, 286, 325, 484, 500, 550, 572, 605, 625, 650, 715, 1100, 1210, 1250, 1300, 1375, 1430, 1573, 1625, 2420, 2500, 2750, 2860, 3025, 3125, 3146, 3250, 3575, 5500, 6050, 6250, 6292, 6500, 6875, 7150, 7865, 8125, 12100, 12500, 13750, 14300, 15125, 15730, 16250, 17875, 27500, 30250, 31460, 32500, 34375, 35750, 39325, 40625, 60500, 68750, 71500, 75625, 78650, 81250, 89375, 137500, 151250, 157300, 162500, 178750, 196625, 302500, 357500, 378125, 393250, 446875, 756250, 786500, 893750, 983125, 1512500, 1787500, 1966250, 3932500, 4915625, 9831250, 19662500]

約数ペア:

[(1, 19662500), (2, 9831250), (4, 4915625), (5, 3932500), (10, 1966250), (11, 1787500), (13, 1512500), (20, 983125), (22, 893750), (25, 786500), (26, 756250), (44, 446875), (50, 393250), (52, 378125), (55, 357500), (65, 302500), (100, 196625), (110, 178750), (121, 162500), (125, 157300), (130, 151250), (143, 137500), (220, 89375), (242, 81250), (250, 78650), (260, 75625), (275, 71500), (286, 68750), (325, 60500), (484, 40625), (500, 39325), (550, 35750), (572, 34375), (605, 32500), (625, 31460), (650, 30250), (715, 27500), (1100, 17875), (1210, 16250), (1250, 15730), (1300, 15125), (1375, 14300), (1430, 13750), (1573, 12500), (1625, 12100), (2420, 8125), (2500, 7865), (2750, 7150), (2860, 6875), (3025, 6500), (3125, 6292), (3146, 6250), (3250, 6050), (3575, 5500)]