281772020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 639830016

約数和(自身を除く): 358057996

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 71, 74, 124, 142, 148, 155, 173, 185, 284, 310, 346, 355, 370, 620, 692, 710, 740, 865, 1147, 1420, 1730, 2201, 2294, 2627, 3460, 4402, 4588, 5254, 5363, 5735, 6401, 8804, 10508, 10726, 11005, 11470, 12283, 12802, 13135, 21452, 22010, 22940, 24566, 25604, 26270, 26815, 32005, 44020, 49132, 52540, 53630, 61415, 64010, 81437, 107260, 122830, 128020, 162874, 198431, 245660, 325748, 380773, 396862, 407185, 454471, 761546, 793724, 814370, 908942, 992155, 1523092, 1628740, 1817884, 1903865, 1984310, 2272355, 3807730, 3968620, 4544710, 7615460, 9089420, 14088601, 28177202, 56354404, 70443005, 140886010, 281772020]

約数ペア:

[(1, 281772020), (2, 140886010), (4, 70443005), (5, 56354404), (10, 28177202), (20, 14088601), (31, 9089420), (37, 7615460), (62, 4544710), (71, 3968620), (74, 3807730), (124, 2272355), (142, 1984310), (148, 1903865), (155, 1817884), (173, 1628740), (185, 1523092), (284, 992155), (310, 908942), (346, 814370), (355, 793724), (370, 761546), (620, 454471), (692, 407185), (710, 396862), (740, 380773), (865, 325748), (1147, 245660), (1420, 198431), (1730, 162874), (2201, 128020), (2294, 122830), (2627, 107260), (3460, 81437), (4402, 64010), (4588, 61415), (5254, 53630), (5363, 52540), (5735, 49132), (6401, 44020), (8804, 32005), (10508, 26815), (10726, 26270), (11005, 25604), (11470, 24566), (12283, 22940), (12802, 22010), (13135, 21452)]