21565890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2887}}^1$

素因数の和:2983

約数の個数: 48

約数和(自身を含む): 56766528

約数和(自身を除く): 35200638

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 83, 90, 166, 249, 415, 498, 747, 830, 1245, 1494, 2490, 2887, 3735, 5774, 7470, 8661, 14435, 17322, 25983, 28870, 43305, 51966, 86610, 129915, 239621, 259830, 479242, 718863, 1198105, 1437726, 2156589, 2396210, 3594315, 4313178, 7188630, 10782945, 21565890]

約数ペア:

[(1, 21565890), (2, 10782945), (3, 7188630), (5, 4313178), (6, 3594315), (9, 2396210), (10, 2156589), (15, 1437726), (18, 1198105), (30, 718863), (45, 479242), (83, 259830), (90, 239621), (166, 129915), (249, 86610), (415, 51966), (498, 43305), (747, 28870), (830, 25983), (1245, 17322), (1494, 14435), (2490, 8661), (2887, 7470), (3735, 5774)]