31008180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 103420800

約数和(自身を除く): 72412620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 53, 60, 70, 84, 98, 105, 106, 140, 147, 159, 196, 199, 210, 212, 245, 265, 294, 318, 371, 398, 420, 490, 530, 588, 597, 636, 735, 742, 795, 796, 980, 995, 1060, 1113, 1194, 1393, 1470, 1484, 1590, 1855, 1990, 2226, 2388, 2597, 2786, 2940, 2985, 3180, 3710, 3980, 4179, 4452, 5194, 5565, 5572, 5970, 6965, 7420, 7791, 8358, 9751, 10388, 10547, 11130, 11940, 12985, 13930, 15582, 16716, 19502, 20895, 21094, 22260, 25970, 27860, 29253, 31164, 31641, 38955, 39004, 41790, 42188, 48755, 51940, 52735, 58506, 63282, 73829, 77910, 83580, 97510, 105470, 117012, 126564, 146265, 147658, 155820, 158205, 195020, 210940, 221487, 292530, 295316, 316410, 369145, 442974, 516803, 585060, 632820, 738290, 885948, 1033606, 1107435, 1476580, 1550409, 2067212, 2214870, 2584015, 3100818, 4429740, 5168030, 6201636, 7752045, 10336060, 15504090, 31008180]

約数ペア:

[(1, 31008180), (2, 15504090), (3, 10336060), (4, 7752045), (5, 6201636), (6, 5168030), (7, 4429740), (10, 3100818), (12, 2584015), (14, 2214870), (15, 2067212), (20, 1550409), (21, 1476580), (28, 1107435), (30, 1033606), (35, 885948), (42, 738290), (49, 632820), (53, 585060), (60, 516803), (70, 442974), (84, 369145), (98, 316410), (105, 295316), (106, 292530), (140, 221487), (147, 210940), (159, 195020), (196, 158205), (199, 155820), (210, 147658), (212, 146265), (245, 126564), (265, 117012), (294, 105470), (318, 97510), (371, 83580), (398, 77910), (420, 73829), (490, 63282), (530, 58506), (588, 52735), (597, 51940), (636, 48755), (735, 42188), (742, 41790), (795, 39004), (796, 38955), (980, 31641), (995, 31164), (1060, 29253), (1113, 27860), (1194, 25970), (1393, 22260), (1470, 21094), (1484, 20895), (1590, 19502), (1855, 16716), (1990, 15582), (2226, 13930), (2388, 12985), (2597, 11940), (2786, 11130), (2940, 10547), (2985, 10388), (3180, 9751), (3710, 8358), (3980, 7791), (4179, 7420), (4452, 6965), (5194, 5970), (5565, 5572)]