28117980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1291}}^1$

素因数の和:1328

約数の個数: 108

約数和(自身を含む): 93822456

約数和(自身を除く): 65704476

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 1089, 1210, 1291, 1452, 1815, 1980, 2178, 2420, 2582, 3630, 3873, 4356, 5164, 5445, 6455, 7260, 7746, 10890, 11619, 12910, 14201, 15492, 19365, 21780, 23238, 25820, 28402, 38730, 42603, 46476, 56804, 58095, 71005, 77460, 85206, 116190, 127809, 142010, 156211, 170412, 213015, 232380, 255618, 284020, 312422, 426030, 468633, 511236, 624844, 639045, 781055, 852060, 937266, 1278090, 1405899, 1562110, 1874532, 2343165, 2556180, 2811798, 3124220, 4686330, 5623596, 7029495, 9372660, 14058990, 28117980]

約数ペア:

[(1, 28117980), (2, 14058990), (3, 9372660), (4, 7029495), (5, 5623596), (6, 4686330), (9, 3124220), (10, 2811798), (11, 2556180), (12, 2343165), (15, 1874532), (18, 1562110), (20, 1405899), (22, 1278090), (30, 937266), (33, 852060), (36, 781055), (44, 639045), (45, 624844), (55, 511236), (60, 468633), (66, 426030), (90, 312422), (99, 284020), (110, 255618), (121, 232380), (132, 213015), (165, 170412), (180, 156211), (198, 142010), (220, 127809), (242, 116190), (330, 85206), (363, 77460), (396, 71005), (484, 58095), (495, 56804), (605, 46476), (660, 42603), (726, 38730), (990, 28402), (1089, 25820), (1210, 23238), (1291, 21780), (1452, 19365), (1815, 15492), (1980, 14201), (2178, 12910), (2420, 11619), (2582, 10890), (3630, 7746), (3873, 7260), (4356, 6455), (5164, 5445)]