21480540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5869}}^1$

素因数の和:5942

約数の個数: 48

約数和(自身を含む): 61141920

約数和(自身を除く): 39661380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5869, 11738, 17607, 23476, 29345, 35214, 58690, 70428, 88035, 117380, 176070, 352140, 358009, 716018, 1074027, 1432036, 1790045, 2148054, 3580090, 4296108, 5370135, 7160180, 10740270, 21480540]

約数ペア:

[(1, 21480540), (2, 10740270), (3, 7160180), (4, 5370135), (5, 4296108), (6, 3580090), (10, 2148054), (12, 1790045), (15, 1432036), (20, 1074027), (30, 716018), (60, 358009), (61, 352140), (122, 176070), (183, 117380), (244, 88035), (305, 70428), (366, 58690), (610, 35214), (732, 29345), (915, 23476), (1220, 17607), (1830, 11738), (3660, 5869)]