28722820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 72576000

約数和(自身を除く): 43853180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 79, 98, 106, 140, 158, 196, 212, 245, 265, 316, 343, 371, 395, 490, 530, 553, 686, 742, 790, 980, 1060, 1106, 1372, 1484, 1580, 1715, 1855, 2212, 2597, 2765, 3430, 3710, 3871, 4187, 5194, 5530, 6860, 7420, 7742, 8374, 10388, 11060, 12985, 15484, 16748, 18179, 19355, 20935, 25970, 27097, 29309, 36358, 38710, 41870, 51940, 54194, 58618, 72716, 77420, 83740, 90895, 108388, 117236, 135485, 146545, 181790, 205163, 270970, 293090, 363580, 410326, 541940, 586180, 820652, 1025815, 1436141, 2051630, 2872282, 4103260, 5744564, 7180705, 14361410, 28722820]

約数ペア:

[(1, 28722820), (2, 14361410), (4, 7180705), (5, 5744564), (7, 4103260), (10, 2872282), (14, 2051630), (20, 1436141), (28, 1025815), (35, 820652), (49, 586180), (53, 541940), (70, 410326), (79, 363580), (98, 293090), (106, 270970), (140, 205163), (158, 181790), (196, 146545), (212, 135485), (245, 117236), (265, 108388), (316, 90895), (343, 83740), (371, 77420), (395, 72716), (490, 58618), (530, 54194), (553, 51940), (686, 41870), (742, 38710), (790, 36358), (980, 29309), (1060, 27097), (1106, 25970), (1372, 20935), (1484, 19355), (1580, 18179), (1715, 16748), (1855, 15484), (2212, 12985), (2597, 11060), (2765, 10388), (3430, 8374), (3710, 7742), (3871, 7420), (4187, 6860), (5194, 5530)]