8152040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 20154960

約数和(自身を除く): 12002920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 257, 260, 305, 488, 514, 520, 610, 793, 1028, 1220, 1285, 1586, 2056, 2440, 2570, 3172, 3341, 3965, 5140, 6344, 6682, 7930, 10280, 13364, 15677, 15860, 16705, 26728, 31354, 31720, 33410, 62708, 66820, 78385, 125416, 133640, 156770, 203801, 313540, 407602, 627080, 815204, 1019005, 1630408, 2038010, 4076020, 8152040]

約数ペア:

[(1, 8152040), (2, 4076020), (4, 2038010), (5, 1630408), (8, 1019005), (10, 815204), (13, 627080), (20, 407602), (26, 313540), (40, 203801), (52, 156770), (61, 133640), (65, 125416), (104, 78385), (122, 66820), (130, 62708), (244, 33410), (257, 31720), (260, 31354), (305, 26728), (488, 16705), (514, 15860), (520, 15677), (610, 13364), (793, 10280), (1028, 7930), (1220, 6682), (1285, 6344), (1586, 5140), (2056, 3965), (2440, 3341), (2570, 3172)]