21283980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11443}}^1$

素因数の和:11486

約数の個数: 48

約数和(自身を含む): 61522944

約数和(自身を除く): 40238964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 11443, 22886, 34329, 45772, 57215, 68658, 114430, 137316, 171645, 228860, 343290, 354733, 686580, 709466, 1064199, 1418932, 1773665, 2128398, 3547330, 4256796, 5320995, 7094660, 10641990, 21283980]

約数ペア:

[(1, 21283980), (2, 10641990), (3, 7094660), (4, 5320995), (5, 4256796), (6, 3547330), (10, 2128398), (12, 1773665), (15, 1418932), (20, 1064199), (30, 709466), (31, 686580), (60, 354733), (62, 343290), (93, 228860), (124, 171645), (155, 137316), (186, 114430), (310, 68658), (372, 57215), (465, 45772), (620, 34329), (930, 22886), (1860, 11443)]