5491220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 13415808

約数和(自身を除く): 7924588

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 643, 854, 1220, 1286, 1708, 2135, 2572, 3215, 4270, 4501, 6430, 8540, 9002, 12860, 18004, 22505, 39223, 45010, 78446, 90020, 156892, 196115, 274561, 392230, 549122, 784460, 1098244, 1372805, 2745610, 5491220]

約数ペア:

[(1, 5491220), (2, 2745610), (4, 1372805), (5, 1098244), (7, 784460), (10, 549122), (14, 392230), (20, 274561), (28, 196115), (35, 156892), (61, 90020), (70, 78446), (122, 45010), (140, 39223), (244, 22505), (305, 18004), (427, 12860), (610, 9002), (643, 8540), (854, 6430), (1220, 4501), (1286, 4270), (1708, 3215), (2135, 2572)]