28403388

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{443}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 78060528

約数和(自身を除く): 49657140

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 137, 156, 234, 274, 411, 443, 468, 548, 822, 886, 1233, 1329, 1644, 1772, 1781, 2466, 2658, 3562, 3987, 4932, 5316, 5343, 5759, 7124, 7974, 10686, 11518, 15948, 16029, 17277, 21372, 23036, 32058, 34554, 51831, 60691, 64116, 69108, 103662, 121382, 182073, 207324, 242764, 364146, 546219, 728292, 788983, 1092438, 1577966, 2184876, 2366949, 3155932, 4733898, 7100847, 9467796, 14201694, 28403388]

約数ペア:

[(1, 28403388), (2, 14201694), (3, 9467796), (4, 7100847), (6, 4733898), (9, 3155932), (12, 2366949), (13, 2184876), (18, 1577966), (26, 1092438), (36, 788983), (39, 728292), (52, 546219), (78, 364146), (117, 242764), (137, 207324), (156, 182073), (234, 121382), (274, 103662), (411, 69108), (443, 64116), (468, 60691), (548, 51831), (822, 34554), (886, 32058), (1233, 23036), (1329, 21372), (1644, 17277), (1772, 16029), (1781, 15948), (2466, 11518), (2658, 10686), (3562, 7974), (3987, 7124), (4932, 5759), (5316, 5343)]