21901000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^2\times {\mathrm{181}}^1$

素因数の和:224

約数の個数: 96

約数和(自身を含む): 56642040

約数和(自身を除く): 34741040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 121, 125, 181, 200, 220, 242, 250, 275, 362, 440, 484, 500, 550, 605, 724, 905, 968, 1000, 1100, 1210, 1375, 1448, 1810, 1991, 2200, 2420, 2750, 3025, 3620, 3982, 4525, 4840, 5500, 6050, 7240, 7964, 9050, 9955, 11000, 12100, 15125, 15928, 18100, 19910, 21901, 22625, 24200, 30250, 36200, 39820, 43802, 45250, 49775, 60500, 79640, 87604, 90500, 99550, 109505, 121000, 175208, 181000, 199100, 219010, 248875, 398200, 438020, 497750, 547525, 876040, 995500, 1095050, 1991000, 2190100, 2737625, 4380200, 5475250, 10950500, 21901000]

約数ペア:

[(1, 21901000), (2, 10950500), (4, 5475250), (5, 4380200), (8, 2737625), (10, 2190100), (11, 1991000), (20, 1095050), (22, 995500), (25, 876040), (40, 547525), (44, 497750), (50, 438020), (55, 398200), (88, 248875), (100, 219010), (110, 199100), (121, 181000), (125, 175208), (181, 121000), (200, 109505), (220, 99550), (242, 90500), (250, 87604), (275, 79640), (362, 60500), (440, 49775), (484, 45250), (500, 43802), (550, 39820), (605, 36200), (724, 30250), (905, 24200), (968, 22625), (1000, 21901), (1100, 19910), (1210, 18100), (1375, 15928), (1448, 15125), (1810, 12100), (1991, 11000), (2200, 9955), (2420, 9050), (2750, 7964), (3025, 7240), (3620, 6050), (3982, 5500), (4525, 4840)]