21090750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{61}}^1\times {\mathrm{461}}^1$

素因数の和:542

約数の個数: 64

約数和(自身を含む): 53621568

約数和(自身を除く): 32530818

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 61, 75, 122, 125, 150, 183, 250, 305, 366, 375, 461, 610, 750, 915, 922, 1383, 1525, 1830, 2305, 2766, 3050, 4575, 4610, 6915, 7625, 9150, 11525, 13830, 15250, 22875, 23050, 28121, 34575, 45750, 56242, 57625, 69150, 84363, 115250, 140605, 168726, 172875, 281210, 345750, 421815, 703025, 843630, 1406050, 2109075, 3515125, 4218150, 7030250, 10545375, 21090750]

約数ペア:

[(1, 21090750), (2, 10545375), (3, 7030250), (5, 4218150), (6, 3515125), (10, 2109075), (15, 1406050), (25, 843630), (30, 703025), (50, 421815), (61, 345750), (75, 281210), (122, 172875), (125, 168726), (150, 140605), (183, 115250), (250, 84363), (305, 69150), (366, 57625), (375, 56242), (461, 45750), (610, 34575), (750, 28121), (915, 23050), (922, 22875), (1383, 15250), (1525, 13830), (1830, 11525), (2305, 9150), (2766, 7625), (3050, 6915), (4575, 4610)]