21100500

素因数分解:

$2^2\times 3^4\times 5^3\times {\mathrm{521}}^1$

素因数の和:552

約数の個数: 120

約数和(自身を含む): 68972904

約数和(自身を除く): 47872404

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 225, 250, 270, 300, 324, 375, 405, 450, 500, 521, 540, 675, 750, 810, 900, 1042, 1125, 1350, 1500, 1563, 1620, 2025, 2084, 2250, 2605, 2700, 3126, 3375, 4050, 4500, 4689, 5210, 6252, 6750, 7815, 8100, 9378, 10125, 10420, 13025, 13500, 14067, 15630, 18756, 20250, 23445, 26050, 28134, 31260, 39075, 40500, 42201, 46890, 52100, 56268, 65125, 70335, 78150, 84402, 93780, 117225, 130250, 140670, 156300, 168804, 195375, 211005, 234450, 260500, 281340, 351675, 390750, 422010, 468900, 586125, 703350, 781500, 844020, 1055025, 1172250, 1406700, 1758375, 2110050, 2344500, 3516750, 4220100, 5275125, 7033500, 10550250, 21100500]

約数ペア:

[(1, 21100500), (2, 10550250), (3, 7033500), (4, 5275125), (5, 4220100), (6, 3516750), (9, 2344500), (10, 2110050), (12, 1758375), (15, 1406700), (18, 1172250), (20, 1055025), (25, 844020), (27, 781500), (30, 703350), (36, 586125), (45, 468900), (50, 422010), (54, 390750), (60, 351675), (75, 281340), (81, 260500), (90, 234450), (100, 211005), (108, 195375), (125, 168804), (135, 156300), (150, 140670), (162, 130250), (180, 117225), (225, 93780), (250, 84402), (270, 78150), (300, 70335), (324, 65125), (375, 56268), (405, 52100), (450, 46890), (500, 42201), (521, 40500), (540, 39075), (675, 31260), (750, 28134), (810, 26050), (900, 23445), (1042, 20250), (1125, 18756), (1350, 15630), (1500, 14067), (1563, 13500), (1620, 13025), (2025, 10420), (2084, 10125), (2250, 9378), (2605, 8100), (2700, 7815), (3126, 6750), (3375, 6252), (4050, 5210), (4500, 4689)]