21010275

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 44278416

約数和(自身を除く): 23268141

約数列:

[1, 3, 5, 9, 11, 13, 15, 25, 33, 39, 45, 55, 65, 75, 99, 117, 143, 165, 195, 225, 275, 325, 429, 495, 585, 653, 715, 825, 975, 1287, 1959, 2145, 2475, 2925, 3265, 3575, 5877, 6435, 7183, 8489, 9795, 10725, 16325, 21549, 25467, 29385, 32175, 35915, 42445, 48975, 64647, 76401, 93379, 107745, 127335, 146925, 179575, 212225, 280137, 323235, 382005, 466895, 538725, 636675, 840411, 1400685, 1616175, 1910025, 2334475, 4202055, 7003425, 21010275]

約数ペア:

[(1, 21010275), (3, 7003425), (5, 4202055), (9, 2334475), (11, 1910025), (13, 1616175), (15, 1400685), (25, 840411), (33, 636675), (39, 538725), (45, 466895), (55, 382005), (65, 323235), (75, 280137), (99, 212225), (117, 179575), (143, 146925), (165, 127335), (195, 107745), (225, 93379), (275, 76401), (325, 64647), (429, 48975), (495, 42445), (585, 35915), (653, 32175), (715, 29385), (825, 25467), (975, 21549), (1287, 16325), (1959, 10725), (2145, 9795), (2475, 8489), (2925, 7183), (3265, 6435), (3575, 5877)]