21903075

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{877}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 41371360

約数和(自身を除く): 19468285

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 877, 925, 999, 1665, 2631, 2775, 4385, 4995, 7893, 8325, 13155, 21925, 23679, 24975, 32449, 39465, 65775, 97347, 118395, 162245, 197325, 292041, 486735, 591975, 811225, 876123, 1460205, 2433675, 4380615, 7301025, 21903075]

約数ペア:

[(1, 21903075), (3, 7301025), (5, 4380615), (9, 2433675), (15, 1460205), (25, 876123), (27, 811225), (37, 591975), (45, 486735), (75, 292041), (111, 197325), (135, 162245), (185, 118395), (225, 97347), (333, 65775), (555, 39465), (675, 32449), (877, 24975), (925, 23679), (999, 21925), (1665, 13155), (2631, 8325), (2775, 7893), (4385, 4995)]