21097907901

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{655357}}^1$

素因数の和:655450

約数の個数: 36

約数和(自身を含む): 35935900572

約数和(自身を除く): 14837992671

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 657, 1533, 3577, 4599, 10731, 32193, 655357, 1966071, 4587499, 5898213, 13762497, 32112493, 41287491, 47841061, 96337479, 143523183, 289012437, 334887427, 430569549, 1004662281, 2344211989, 3013986843, 7032635967, 21097907901]

約数ペア:

[(1, 21097907901), (3, 7032635967), (7, 3013986843), (9, 2344211989), (21, 1004662281), (49, 430569549), (63, 334887427), (73, 289012437), (147, 143523183), (219, 96337479), (441, 47841061), (511, 41287491), (657, 32112493), (1533, 13762497), (3577, 5898213), (4599, 4587499), (10731, 1966071), (32193, 655357)]