1218780460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{31139}}^1$

素因数の和:31270

約数の個数: 48

約数和(自身を含む): 2720390400

約数和(自身を除く): 1501609940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 103, 190, 206, 380, 412, 515, 1030, 1957, 2060, 3914, 7828, 9785, 19570, 31139, 39140, 62278, 124556, 155695, 311390, 591641, 622780, 1183282, 2366564, 2958205, 3207317, 5916410, 6414634, 11832820, 12829268, 16036585, 32073170, 60939023, 64146340, 121878046, 243756092, 304695115, 609390230, 1218780460]

約数ペア:

[(1, 1218780460), (2, 609390230), (4, 304695115), (5, 243756092), (10, 121878046), (19, 64146340), (20, 60939023), (38, 32073170), (76, 16036585), (95, 12829268), (103, 11832820), (190, 6414634), (206, 5916410), (380, 3207317), (412, 2958205), (515, 2366564), (1030, 1183282), (1957, 622780), (2060, 591641), (3914, 311390), (7828, 155695), (9785, 124556), (19570, 62278), (31139, 39140)]