31509940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 87333120

約数和(自身を除く): 55823180

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 37, 44, 49, 55, 70, 74, 77, 79, 98, 110, 140, 148, 154, 158, 185, 196, 220, 245, 259, 308, 316, 370, 385, 395, 407, 490, 518, 539, 553, 740, 770, 790, 814, 869, 980, 1036, 1078, 1106, 1295, 1540, 1580, 1628, 1738, 1813, 2035, 2156, 2212, 2590, 2695, 2765, 2849, 2923, 3476, 3626, 3871, 4070, 4345, 5180, 5390, 5530, 5698, 5846, 6083, 7252, 7742, 8140, 8690, 9065, 10780, 11060, 11396, 11692, 12166, 14245, 14615, 15484, 17380, 18130, 19355, 19943, 20461, 24332, 28490, 29230, 30415, 32153, 36260, 38710, 39886, 40922, 42581, 56980, 58460, 60830, 64306, 77420, 79772, 81844, 85162, 99715, 102305, 121660, 128612, 143227, 160765, 170324, 199430, 204610, 212905, 225071, 286454, 321530, 398860, 409220, 425810, 450142, 572908, 643060, 716135, 851620, 900284, 1125355, 1432270, 1575497, 2250710, 2864540, 3150994, 4501420, 6301988, 7877485, 15754970, 31509940]

約数ペア:

[(1, 31509940), (2, 15754970), (4, 7877485), (5, 6301988), (7, 4501420), (10, 3150994), (11, 2864540), (14, 2250710), (20, 1575497), (22, 1432270), (28, 1125355), (35, 900284), (37, 851620), (44, 716135), (49, 643060), (55, 572908), (70, 450142), (74, 425810), (77, 409220), (79, 398860), (98, 321530), (110, 286454), (140, 225071), (148, 212905), (154, 204610), (158, 199430), (185, 170324), (196, 160765), (220, 143227), (245, 128612), (259, 121660), (308, 102305), (316, 99715), (370, 85162), (385, 81844), (395, 79772), (407, 77420), (490, 64306), (518, 60830), (539, 58460), (553, 56980), (740, 42581), (770, 40922), (790, 39886), (814, 38710), (869, 36260), (980, 32153), (1036, 30415), (1078, 29230), (1106, 28490), (1295, 24332), (1540, 20461), (1580, 19943), (1628, 19355), (1738, 18130), (1813, 17380), (2035, 15484), (2156, 14615), (2212, 14245), (2590, 12166), (2695, 11692), (2765, 11396), (2849, 11060), (2923, 10780), (3476, 9065), (3626, 8690), (3871, 8140), (4070, 7742), (4345, 7252), (5180, 6083), (5390, 5846), (5530, 5698)]