21103698308

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{678401}}^1$

素因数の和:678524

約数の個数: 48

約数和(自身を含む): 46500386688

約数和(自身を除く): 25396688380

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 101, 154, 202, 308, 404, 707, 1111, 1414, 2222, 2828, 4444, 7777, 15554, 31108, 678401, 1356802, 2713604, 4748807, 7462411, 9497614, 14924822, 18995228, 29849644, 52236877, 68518501, 104473754, 137037002, 208947508, 274074004, 479629507, 753703511, 959259014, 1507407022, 1918518028, 3014814044, 5275924577, 10551849154, 21103698308]

約数ペア:

[(1, 21103698308), (2, 10551849154), (4, 5275924577), (7, 3014814044), (11, 1918518028), (14, 1507407022), (22, 959259014), (28, 753703511), (44, 479629507), (77, 274074004), (101, 208947508), (154, 137037002), (202, 104473754), (308, 68518501), (404, 52236877), (707, 29849644), (1111, 18995228), (1414, 14924822), (2222, 9497614), (2828, 7462411), (4444, 4748807), (7777, 2713604), (15554, 1356802), (31108, 678401)]