420870787775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{443}}^1\times {\mathrm{991}}^1\times {\mathrm{1237}}^1$

素因数の和:2712

約数の個数: 48

約数和(自身を含む): 540912427008

約数和(自身を除く): 120041639233

約数列:

[1, 5, 25, 31, 155, 443, 775, 991, 1237, 2215, 4955, 6185, 11075, 13733, 24775, 30721, 30925, 38347, 68665, 153605, 191735, 343325, 439013, 547991, 768025, 958675, 1225867, 2195065, 2739955, 6129335, 10975325, 13609403, 13699775, 16987721, 30646675, 38001877, 68047015, 84938605, 190009385, 340235075, 424693025, 543059081, 950046925, 2715295405, 13576477025, 16834831511, 84174157555, 420870787775]

約数ペア:

[(1, 420870787775), (5, 84174157555), (25, 16834831511), (31, 13576477025), (155, 2715295405), (443, 950046925), (775, 543059081), (991, 424693025), (1237, 340235075), (2215, 190009385), (4955, 84938605), (6185, 68047015), (11075, 38001877), (13733, 30646675), (24775, 16987721), (30721, 13699775), (30925, 13609403), (38347, 10975325), (68665, 6129335), (153605, 2739955), (191735, 2195065), (343325, 1225867), (439013, 958675), (547991, 768025)]