278301380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{12347}}^1$

素因数の和:12393

約数の個数: 72

約数和(自身を含む): 709466688

約数和(自身を除く): 431165308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 4508, 5635, 11270, 12347, 22540, 24694, 49388, 61735, 86429, 123470, 172858, 246940, 283981, 345716, 432145, 567962, 605003, 864290, 1135924, 1210006, 1419905, 1728580, 1987867, 2420012, 2839810, 3025015, 3975734, 5679620, 6050030, 7951468, 9939335, 12100060, 13915069, 19878670, 27830138, 39757340, 55660276, 69575345, 139150690, 278301380]

約数ペア:

[(1, 278301380), (2, 139150690), (4, 69575345), (5, 55660276), (7, 39757340), (10, 27830138), (14, 19878670), (20, 13915069), (23, 12100060), (28, 9939335), (35, 7951468), (46, 6050030), (49, 5679620), (70, 3975734), (92, 3025015), (98, 2839810), (115, 2420012), (140, 1987867), (161, 1728580), (196, 1419905), (230, 1210006), (245, 1135924), (322, 864290), (460, 605003), (490, 567962), (644, 432145), (805, 345716), (980, 283981), (1127, 246940), (1610, 172858), (2254, 123470), (3220, 86429), (4508, 61735), (5635, 49388), (11270, 24694), (12347, 22540)]