255975020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{269}}^1\times {\mathrm{971}}^1$

素因数の和:1263

約数の個数: 72

約数和(自身を含む): 628281360

約数和(自身を除く): 372306340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 269, 490, 538, 971, 980, 1076, 1345, 1883, 1942, 2690, 3766, 3884, 4855, 5380, 6797, 7532, 9415, 9710, 13181, 13594, 18830, 19420, 26362, 27188, 33985, 37660, 47579, 52724, 65905, 67970, 95158, 131810, 135940, 190316, 237895, 261199, 263620, 475790, 522398, 951580, 1044796, 1305995, 1828393, 2611990, 3656786, 5223980, 7313572, 9141965, 12798751, 18283930, 25597502, 36567860, 51195004, 63993755, 127987510, 255975020]

約数ペア:

[(1, 255975020), (2, 127987510), (4, 63993755), (5, 51195004), (7, 36567860), (10, 25597502), (14, 18283930), (20, 12798751), (28, 9141965), (35, 7313572), (49, 5223980), (70, 3656786), (98, 2611990), (140, 1828393), (196, 1305995), (245, 1044796), (269, 951580), (490, 522398), (538, 475790), (971, 263620), (980, 261199), (1076, 237895), (1345, 190316), (1883, 135940), (1942, 131810), (2690, 95158), (3766, 67970), (3884, 65905), (4855, 52724), (5380, 47579), (6797, 37660), (7532, 33985), (9415, 27188), (9710, 26362), (13181, 19420), (13594, 18830)]