21985560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{20357}}^1$

素因数の和:20377

約数の個数: 64

約数和(自身を含む): 73288800

約数和(自身を除く): 51303240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 20357, 40714, 61071, 81428, 101785, 122142, 162856, 183213, 203570, 244284, 305355, 366426, 407140, 488568, 549639, 610710, 732852, 814280, 916065, 1099278, 1221420, 1465704, 1832130, 2198556, 2442840, 2748195, 3664260, 4397112, 5496390, 7328520, 10992780, 21985560]

約数ペア:

[(1, 21985560), (2, 10992780), (3, 7328520), (4, 5496390), (5, 4397112), (6, 3664260), (8, 2748195), (9, 2442840), (10, 2198556), (12, 1832130), (15, 1465704), (18, 1221420), (20, 1099278), (24, 916065), (27, 814280), (30, 732852), (36, 610710), (40, 549639), (45, 488568), (54, 407140), (60, 366426), (72, 305355), (90, 244284), (108, 203570), (120, 183213), (135, 162856), (180, 122142), (216, 101785), (270, 81428), (360, 61071), (540, 40714), (1080, 20357)]