63641720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 148072320

約数和(自身を除く): 84430600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 163, 172, 215, 227, 326, 344, 430, 454, 652, 815, 860, 908, 1135, 1304, 1630, 1720, 1816, 2270, 3260, 4540, 6520, 7009, 9080, 9761, 14018, 19522, 28036, 35045, 37001, 39044, 48805, 56072, 70090, 74002, 78088, 97610, 140180, 148004, 185005, 195220, 280360, 296008, 370010, 390440, 740020, 1480040, 1591043, 3182086, 6364172, 7955215, 12728344, 15910430, 31820860, 63641720]

約数ペア:

[(1, 63641720), (2, 31820860), (4, 15910430), (5, 12728344), (8, 7955215), (10, 6364172), (20, 3182086), (40, 1591043), (43, 1480040), (86, 740020), (163, 390440), (172, 370010), (215, 296008), (227, 280360), (326, 195220), (344, 185005), (430, 148004), (454, 140180), (652, 97610), (815, 78088), (860, 74002), (908, 70090), (1135, 56072), (1304, 48805), (1630, 39044), (1720, 37001), (1816, 35045), (2270, 28036), (3260, 19522), (4540, 14018), (6520, 9761), (7009, 9080)]