19975140

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:610

約数の個数: 96

約数和(自身を含む): 63141120

約数和(自身を除く): 43165980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 71, 90, 108, 135, 142, 180, 213, 270, 284, 355, 426, 521, 540, 639, 710, 852, 1042, 1065, 1278, 1420, 1563, 1917, 2084, 2130, 2556, 2605, 3126, 3195, 3834, 4260, 4689, 5210, 6252, 6390, 7668, 7815, 9378, 9585, 10420, 12780, 14067, 15630, 18756, 19170, 23445, 28134, 31260, 36991, 38340, 46890, 56268, 70335, 73982, 93780, 110973, 140670, 147964, 184955, 221946, 281340, 332919, 369910, 443892, 554865, 665838, 739820, 998757, 1109730, 1331676, 1664595, 1997514, 2219460, 3329190, 3995028, 4993785, 6658380, 9987570, 19975140]

約数ペア:

[(1, 19975140), (2, 9987570), (3, 6658380), (4, 4993785), (5, 3995028), (6, 3329190), (9, 2219460), (10, 1997514), (12, 1664595), (15, 1331676), (18, 1109730), (20, 998757), (27, 739820), (30, 665838), (36, 554865), (45, 443892), (54, 369910), (60, 332919), (71, 281340), (90, 221946), (108, 184955), (135, 147964), (142, 140670), (180, 110973), (213, 93780), (270, 73982), (284, 70335), (355, 56268), (426, 46890), (521, 38340), (540, 36991), (639, 31260), (710, 28134), (852, 23445), (1042, 19170), (1065, 18756), (1278, 15630), (1420, 14067), (1563, 12780), (1917, 10420), (2084, 9585), (2130, 9378), (2556, 7815), (2605, 7668), (3126, 6390), (3195, 6252), (3834, 5210), (4260, 4689)]