20274760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 31435640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 59, 71, 88, 110, 118, 121, 142, 220, 236, 242, 284, 295, 355, 440, 472, 484, 568, 590, 605, 649, 710, 781, 968, 1180, 1210, 1298, 1420, 1562, 2360, 2420, 2596, 2840, 3124, 3245, 3905, 4189, 4840, 5192, 6248, 6490, 7139, 7810, 8378, 8591, 12980, 14278, 15620, 16756, 17182, 20945, 25960, 28556, 31240, 33512, 34364, 35695, 41890, 42955, 46079, 57112, 68728, 71390, 83780, 85910, 92158, 142780, 167560, 171820, 184316, 230395, 285560, 343640, 368632, 460790, 506869, 921580, 1013738, 1843160, 2027476, 2534345, 4054952, 5068690, 10137380, 20274760]

約数ペア:

[(1, 20274760), (2, 10137380), (4, 5068690), (5, 4054952), (8, 2534345), (10, 2027476), (11, 1843160), (20, 1013738), (22, 921580), (40, 506869), (44, 460790), (55, 368632), (59, 343640), (71, 285560), (88, 230395), (110, 184316), (118, 171820), (121, 167560), (142, 142780), (220, 92158), (236, 85910), (242, 83780), (284, 71390), (295, 68728), (355, 57112), (440, 46079), (472, 42955), (484, 41890), (568, 35695), (590, 34364), (605, 33512), (649, 31240), (710, 28556), (781, 25960), (968, 20945), (1180, 17182), (1210, 16756), (1298, 15620), (1420, 14278), (1562, 12980), (2360, 8591), (2420, 8378), (2596, 7810), (2840, 7139), (3124, 6490), (3245, 6248), (3905, 5192), (4189, 4840)]