21281652

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1069}}^1$

素因数の和:1165

約数の個数: 72

約数和(自身を含む): 62316800

約数和(自身を除く): 41035148

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 79, 84, 126, 158, 237, 252, 316, 474, 553, 711, 948, 1069, 1106, 1422, 1659, 2138, 2212, 2844, 3207, 3318, 4276, 4977, 6414, 6636, 7483, 9621, 9954, 12828, 14966, 19242, 19908, 22449, 29932, 38484, 44898, 67347, 84451, 89796, 134694, 168902, 253353, 269388, 337804, 506706, 591157, 760059, 1013412, 1182314, 1520118, 1773471, 2364628, 3040236, 3546942, 5320413, 7093884, 10640826, 21281652]

約数ペア:

[(1, 21281652), (2, 10640826), (3, 7093884), (4, 5320413), (6, 3546942), (7, 3040236), (9, 2364628), (12, 1773471), (14, 1520118), (18, 1182314), (21, 1013412), (28, 760059), (36, 591157), (42, 506706), (63, 337804), (79, 269388), (84, 253353), (126, 168902), (158, 134694), (237, 89796), (252, 84451), (316, 67347), (474, 44898), (553, 38484), (711, 29932), (948, 22449), (1069, 19908), (1106, 19242), (1422, 14966), (1659, 12828), (2138, 9954), (2212, 9621), (2844, 7483), (3207, 6636), (3318, 6414), (4276, 4977)]