21525780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:277

約数の個数: 96

約数和(自身を含む): 63479808

約数和(自身を除く): 41954028

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 71, 93, 124, 142, 155, 163, 186, 213, 284, 310, 326, 355, 372, 426, 465, 489, 620, 652, 710, 815, 852, 930, 978, 1065, 1420, 1630, 1860, 1956, 2130, 2201, 2445, 3260, 4260, 4402, 4890, 5053, 6603, 8804, 9780, 10106, 11005, 11573, 13206, 15159, 20212, 22010, 23146, 25265, 26412, 30318, 33015, 34719, 44020, 46292, 50530, 57865, 60636, 66030, 69438, 75795, 101060, 115730, 132060, 138876, 151590, 173595, 231460, 303180, 347190, 358763, 694380, 717526, 1076289, 1435052, 1793815, 2152578, 3587630, 4305156, 5381445, 7175260, 10762890, 21525780]

約数ペア:

[(1, 21525780), (2, 10762890), (3, 7175260), (4, 5381445), (5, 4305156), (6, 3587630), (10, 2152578), (12, 1793815), (15, 1435052), (20, 1076289), (30, 717526), (31, 694380), (60, 358763), (62, 347190), (71, 303180), (93, 231460), (124, 173595), (142, 151590), (155, 138876), (163, 132060), (186, 115730), (213, 101060), (284, 75795), (310, 69438), (326, 66030), (355, 60636), (372, 57865), (426, 50530), (465, 46292), (489, 44020), (620, 34719), (652, 33015), (710, 30318), (815, 26412), (852, 25265), (930, 23146), (978, 22010), (1065, 20212), (1420, 15159), (1630, 13206), (1860, 11573), (1956, 11005), (2130, 10106), (2201, 9780), (2445, 8804), (3260, 6603), (4260, 5053), (4402, 4890)]