18646460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{359}}^1$

素因数の和:435

約数の個数: 72

約数和(自身を含む): 46539360

約数和(自身を除く): 27892900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 359, 371, 490, 530, 718, 742, 980, 1060, 1436, 1484, 1795, 1855, 2513, 2597, 3590, 3710, 5026, 5194, 7180, 7420, 10052, 10388, 12565, 12985, 17591, 19027, 25130, 25970, 35182, 38054, 50260, 51940, 70364, 76108, 87955, 95135, 133189, 175910, 190270, 266378, 351820, 380540, 532756, 665945, 932323, 1331890, 1864646, 2663780, 3729292, 4661615, 9323230, 18646460]

約数ペア:

[(1, 18646460), (2, 9323230), (4, 4661615), (5, 3729292), (7, 2663780), (10, 1864646), (14, 1331890), (20, 932323), (28, 665945), (35, 532756), (49, 380540), (53, 351820), (70, 266378), (98, 190270), (106, 175910), (140, 133189), (196, 95135), (212, 87955), (245, 76108), (265, 70364), (359, 51940), (371, 50260), (490, 38054), (530, 35182), (718, 25970), (742, 25130), (980, 19027), (1060, 17591), (1436, 12985), (1484, 12565), (1795, 10388), (1855, 10052), (2513, 7420), (2597, 7180), (3590, 5194), (3710, 5026)]