18195980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 42989856

約数和(自身を除く): 24793876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 103, 110, 121, 146, 206, 220, 242, 292, 365, 412, 484, 515, 605, 730, 803, 1030, 1133, 1210, 1460, 1606, 2060, 2266, 2420, 3212, 4015, 4532, 5665, 7519, 8030, 8833, 11330, 12463, 15038, 16060, 17666, 22660, 24926, 30076, 35332, 37595, 44165, 49852, 62315, 75190, 82709, 88330, 124630, 150380, 165418, 176660, 249260, 330836, 413545, 827090, 909799, 1654180, 1819598, 3639196, 4548995, 9097990, 18195980]

約数ペア:

[(1, 18195980), (2, 9097990), (4, 4548995), (5, 3639196), (10, 1819598), (11, 1654180), (20, 909799), (22, 827090), (44, 413545), (55, 330836), (73, 249260), (103, 176660), (110, 165418), (121, 150380), (146, 124630), (206, 88330), (220, 82709), (242, 75190), (292, 62315), (365, 49852), (412, 44165), (484, 37595), (515, 35332), (605, 30076), (730, 24926), (803, 22660), (1030, 17666), (1133, 16060), (1210, 15038), (1460, 12463), (1606, 11330), (2060, 8833), (2266, 8030), (2420, 7519), (3212, 5665), (4015, 4532)]