31451580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:216

約数の個数: 144

約数和(自身を含む): 101896704

約数和(自身を除く): 70445124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 71, 90, 92, 107, 115, 138, 142, 180, 207, 213, 214, 230, 276, 284, 321, 345, 355, 414, 426, 428, 460, 535, 639, 642, 690, 710, 828, 852, 963, 1035, 1065, 1070, 1278, 1284, 1380, 1420, 1605, 1633, 1926, 2070, 2130, 2140, 2461, 2556, 3195, 3210, 3266, 3852, 4140, 4260, 4815, 4899, 4922, 6390, 6420, 6532, 7383, 7597, 8165, 9630, 9798, 9844, 12305, 12780, 14697, 14766, 15194, 16330, 19260, 19596, 22149, 22791, 24495, 24610, 29394, 29532, 30388, 32660, 36915, 37985, 44298, 45582, 48990, 49220, 58788, 68373, 73485, 73830, 75970, 88596, 91164, 97980, 110745, 113955, 136746, 146970, 147660, 151940, 174731, 221490, 227910, 273492, 293940, 341865, 349462, 442980, 455820, 524193, 683730, 698924, 873655, 1048386, 1367460, 1572579, 1747310, 2096772, 2620965, 3145158, 3494620, 5241930, 6290316, 7862895, 10483860, 15725790, 31451580]

約数ペア:

[(1, 31451580), (2, 15725790), (3, 10483860), (4, 7862895), (5, 6290316), (6, 5241930), (9, 3494620), (10, 3145158), (12, 2620965), (15, 2096772), (18, 1747310), (20, 1572579), (23, 1367460), (30, 1048386), (36, 873655), (45, 698924), (46, 683730), (60, 524193), (69, 455820), (71, 442980), (90, 349462), (92, 341865), (107, 293940), (115, 273492), (138, 227910), (142, 221490), (180, 174731), (207, 151940), (213, 147660), (214, 146970), (230, 136746), (276, 113955), (284, 110745), (321, 97980), (345, 91164), (355, 88596), (414, 75970), (426, 73830), (428, 73485), (460, 68373), (535, 58788), (639, 49220), (642, 48990), (690, 45582), (710, 44298), (828, 37985), (852, 36915), (963, 32660), (1035, 30388), (1065, 29532), (1070, 29394), (1278, 24610), (1284, 24495), (1380, 22791), (1420, 22149), (1605, 19596), (1633, 19260), (1926, 16330), (2070, 15194), (2130, 14766), (2140, 14697), (2461, 12780), (2556, 12305), (3195, 9844), (3210, 9798), (3266, 9630), (3852, 8165), (4140, 7597), (4260, 7383), (4815, 6532), (4899, 6420), (4922, 6390)]