21167690075

素因数分解:

$5^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{359}}^1\times {\mathrm{379}}^1$

素因数の和:889

約数の個数: 72

約数和(自身を含む): 30940876800

約数和(自身を除く): 9773186725

約数列:

[1, 5, 7, 25, 35, 49, 127, 175, 245, 359, 379, 635, 889, 1225, 1795, 1895, 2513, 2653, 3175, 4445, 6223, 8975, 9475, 12565, 13265, 17591, 18571, 22225, 31115, 45593, 48133, 62825, 66325, 87955, 92855, 136061, 155575, 227965, 240665, 319151, 336931, 439775, 464275, 680305, 952427, 1139825, 1203325, 1595755, 1684655, 2234057, 2358517, 3401525, 4762135, 6666989, 7978775, 8423275, 11170285, 11792585, 17279747, 23810675, 33334945, 55851425, 58962925, 86398735, 120958229, 166674725, 431993675, 604791145, 846707603, 3023955725, 4233538015, 21167690075]

約数ペア:

[(1, 21167690075), (5, 4233538015), (7, 3023955725), (25, 846707603), (35, 604791145), (49, 431993675), (127, 166674725), (175, 120958229), (245, 86398735), (359, 58962925), (379, 55851425), (635, 33334945), (889, 23810675), (1225, 17279747), (1795, 11792585), (1895, 11170285), (2513, 8423275), (2653, 7978775), (3175, 6666989), (4445, 4762135), (6223, 3401525), (8975, 2358517), (9475, 2234057), (12565, 1684655), (13265, 1595755), (17591, 1203325), (18571, 1139825), (22225, 952427), (31115, 680305), (45593, 464275), (48133, 439775), (62825, 336931), (66325, 319151), (87955, 240665), (92855, 227965), (136061, 155575)]