1615280

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 3828624

約数和(自身を除く): 2213344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 331, 488, 610, 662, 976, 1220, 1324, 1655, 2440, 2648, 3310, 4880, 5296, 6620, 13240, 20191, 26480, 40382, 80764, 100955, 161528, 201910, 323056, 403820, 807640, 1615280]

約数ペア:

[(1, 1615280), (2, 807640), (4, 403820), (5, 323056), (8, 201910), (10, 161528), (16, 100955), (20, 80764), (40, 40382), (61, 26480), (80, 20191), (122, 13240), (244, 6620), (305, 5296), (331, 4880), (488, 3310), (610, 2648), (662, 2440), (976, 1655), (1220, 1324)]