2100098875

素因数分解:

$5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{557}}^1$

素因数の和:749

約数の個数: 64

約数和(自身を含む): 3119800320

約数和(自身を除く): 1019701445

約数列:

[1, 5, 7, 25, 31, 35, 125, 139, 155, 175, 217, 557, 695, 775, 875, 973, 1085, 2785, 3475, 3875, 3899, 4309, 4865, 5425, 13925, 17267, 17375, 19495, 21545, 24325, 27125, 30163, 69625, 77423, 86335, 97475, 107725, 120869, 121625, 150815, 387115, 431675, 487375, 538625, 541961, 604345, 754075, 1935575, 2158375, 2400113, 2709805, 3021725, 3770375, 9677875, 12000565, 13549025, 15108625, 16800791, 60002825, 67745125, 84003955, 300014125, 420019775, 2100098875]

約数ペア:

[(1, 2100098875), (5, 420019775), (7, 300014125), (25, 84003955), (31, 67745125), (35, 60002825), (125, 16800791), (139, 15108625), (155, 13549025), (175, 12000565), (217, 9677875), (557, 3770375), (695, 3021725), (775, 2709805), (875, 2400113), (973, 2158375), (1085, 1935575), (2785, 754075), (3475, 604345), (3875, 541961), (3899, 538625), (4309, 487375), (4865, 431675), (5425, 387115), (13925, 150815), (17267, 121625), (17375, 120869), (19495, 107725), (21545, 97475), (24325, 86335), (27125, 77423), (30163, 69625)]