71755420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 167580000

約数和(自身を除く): 95824580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 149, 199, 220, 242, 298, 398, 484, 596, 605, 745, 796, 995, 1210, 1490, 1639, 1990, 2189, 2420, 2980, 3278, 3980, 4378, 6556, 8195, 8756, 10945, 16390, 18029, 21890, 24079, 29651, 32780, 36058, 43780, 48158, 59302, 72116, 90145, 96316, 118604, 120395, 148255, 180290, 240790, 296510, 326161, 360580, 481580, 593020, 652322, 1304644, 1630805, 3261610, 3587771, 6523220, 7175542, 14351084, 17938855, 35877710, 71755420]

約数ペア:

[(1, 71755420), (2, 35877710), (4, 17938855), (5, 14351084), (10, 7175542), (11, 6523220), (20, 3587771), (22, 3261610), (44, 1630805), (55, 1304644), (110, 652322), (121, 593020), (149, 481580), (199, 360580), (220, 326161), (242, 296510), (298, 240790), (398, 180290), (484, 148255), (596, 120395), (605, 118604), (745, 96316), (796, 90145), (995, 72116), (1210, 59302), (1490, 48158), (1639, 43780), (1990, 36058), (2189, 32780), (2420, 29651), (2980, 24079), (3278, 21890), (3980, 18029), (4378, 16390), (6556, 10945), (8195, 8756)]