242842840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:225

約数の個数: 128

約数和(自身を含む): 595353600

約数和(自身を除く): 352510760

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 67, 74, 79, 124, 134, 148, 155, 158, 185, 248, 268, 296, 310, 316, 335, 370, 395, 536, 620, 632, 670, 740, 790, 1147, 1240, 1340, 1480, 1580, 2077, 2294, 2449, 2479, 2680, 2923, 3160, 4154, 4588, 4898, 4958, 5293, 5735, 5846, 8308, 9176, 9796, 9916, 10385, 10586, 11470, 11692, 12245, 12395, 14615, 16616, 19592, 19832, 20770, 21172, 22940, 23384, 24490, 24790, 26465, 29230, 41540, 42344, 45880, 48980, 49580, 52930, 58460, 76849, 83080, 90613, 97960, 99160, 105860, 116920, 153698, 164083, 181226, 195841, 211720, 307396, 328166, 362452, 384245, 391682, 453065, 614792, 656332, 724904, 768490, 783364, 820415, 906130, 979205, 1312664, 1536980, 1566728, 1640830, 1812260, 1958410, 3073960, 3281660, 3624520, 3916820, 6071071, 6563320, 7833640, 12142142, 24284284, 30355355, 48568568, 60710710, 121421420, 242842840]

約数ペア:

[(1, 242842840), (2, 121421420), (4, 60710710), (5, 48568568), (8, 30355355), (10, 24284284), (20, 12142142), (31, 7833640), (37, 6563320), (40, 6071071), (62, 3916820), (67, 3624520), (74, 3281660), (79, 3073960), (124, 1958410), (134, 1812260), (148, 1640830), (155, 1566728), (158, 1536980), (185, 1312664), (248, 979205), (268, 906130), (296, 820415), (310, 783364), (316, 768490), (335, 724904), (370, 656332), (395, 614792), (536, 453065), (620, 391682), (632, 384245), (670, 362452), (740, 328166), (790, 307396), (1147, 211720), (1240, 195841), (1340, 181226), (1480, 164083), (1580, 153698), (2077, 116920), (2294, 105860), (2449, 99160), (2479, 97960), (2680, 90613), (2923, 83080), (3160, 76849), (4154, 58460), (4588, 52930), (4898, 49580), (4958, 48980), (5293, 45880), (5735, 42344), (5846, 41540), (8308, 29230), (9176, 26465), (9796, 24790), (9916, 24490), (10385, 23384), (10586, 22940), (11470, 21172), (11692, 20770), (12245, 19832), (12395, 19592), (14615, 16616)]