21771828

素因数分解:

$2^2\times 3^5\times {\mathrm{13}}^1\times {\mathrm{1723}}^1$

素因数の和:1755

約数の個数: 72

約数和(自身を含む): 61498528

約数和(自身を除く): 39726700

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 234, 243, 324, 351, 468, 486, 702, 972, 1053, 1404, 1723, 2106, 3159, 3446, 4212, 5169, 6318, 6892, 10338, 12636, 15507, 20676, 22399, 31014, 44798, 46521, 62028, 67197, 89596, 93042, 134394, 139563, 186084, 201591, 268788, 279126, 403182, 418689, 558252, 604773, 806364, 837378, 1209546, 1674756, 1814319, 2419092, 3628638, 5442957, 7257276, 10885914, 21771828]

約数ペア:

[(1, 21771828), (2, 10885914), (3, 7257276), (4, 5442957), (6, 3628638), (9, 2419092), (12, 1814319), (13, 1674756), (18, 1209546), (26, 837378), (27, 806364), (36, 604773), (39, 558252), (52, 418689), (54, 403182), (78, 279126), (81, 268788), (108, 201591), (117, 186084), (156, 139563), (162, 134394), (234, 93042), (243, 89596), (324, 67197), (351, 62028), (468, 46521), (486, 44798), (702, 31014), (972, 22399), (1053, 20676), (1404, 15507), (1723, 12636), (2106, 10338), (3159, 6892), (3446, 6318), (4212, 5169)]