21630609

素因数分解:

$3^2\times 7^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:65

約数の個数: 72

約数和(自身を含む): 42823872

約数和(自身を除く): 21193263

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 49, 63, 77, 91, 99, 117, 143, 147, 231, 273, 343, 429, 441, 539, 637, 693, 819, 1001, 1029, 1287, 1617, 1911, 2401, 3003, 3087, 3773, 4459, 4851, 5733, 7007, 7203, 9009, 11319, 13377, 16807, 21021, 21609, 26411, 31213, 33957, 40131, 49049, 50421, 63063, 79233, 93639, 147147, 151263, 184877, 218491, 237699, 280917, 343343, 441441, 554631, 655473, 1030029, 1663893, 1966419, 2403401, 3090087, 7210203, 21630609]

約数ペア:

[(1, 21630609), (3, 7210203), (7, 3090087), (9, 2403401), (11, 1966419), (13, 1663893), (21, 1030029), (33, 655473), (39, 554631), (49, 441441), (63, 343343), (77, 280917), (91, 237699), (99, 218491), (117, 184877), (143, 151263), (147, 147147), (231, 93639), (273, 79233), (343, 63063), (429, 50421), (441, 49049), (539, 40131), (637, 33957), (693, 31213), (819, 26411), (1001, 21609), (1029, 21021), (1287, 16807), (1617, 13377), (1911, 11319), (2401, 9009), (3003, 7203), (3087, 7007), (3773, 5733), (4459, 4851)]