21219900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5441}}^1$

素因数の和:5471

約数の個数: 72

約数和(自身を含む): 66131184

約数和(自身を除く): 44911284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5441, 10882, 16323, 21764, 27205, 32646, 54410, 65292, 70733, 81615, 108820, 136025, 141466, 163230, 212199, 272050, 282932, 326460, 353665, 408075, 424398, 544100, 707330, 816150, 848796, 1060995, 1414660, 1632300, 1768325, 2121990, 3536650, 4243980, 5304975, 7073300, 10609950, 21219900]

約数ペア:

[(1, 21219900), (2, 10609950), (3, 7073300), (4, 5304975), (5, 4243980), (6, 3536650), (10, 2121990), (12, 1768325), (13, 1632300), (15, 1414660), (20, 1060995), (25, 848796), (26, 816150), (30, 707330), (39, 544100), (50, 424398), (52, 408075), (60, 353665), (65, 326460), (75, 282932), (78, 272050), (100, 212199), (130, 163230), (150, 141466), (156, 136025), (195, 108820), (260, 81615), (300, 70733), (325, 65292), (390, 54410), (650, 32646), (780, 27205), (975, 21764), (1300, 16323), (1950, 10882), (3900, 5441)]