641920

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:95

約数の個数: 64

約数和(自身を含む): 1652400

約数和(自身を除く): 1010480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 59, 64, 68, 80, 85, 118, 128, 136, 160, 170, 236, 272, 295, 320, 340, 472, 544, 590, 640, 680, 944, 1003, 1088, 1180, 1360, 1888, 2006, 2176, 2360, 2720, 3776, 4012, 4720, 5015, 5440, 7552, 8024, 9440, 10030, 10880, 16048, 18880, 20060, 32096, 37760, 40120, 64192, 80240, 128384, 160480, 320960, 641920]

約数ペア:

[(1, 641920), (2, 320960), (4, 160480), (5, 128384), (8, 80240), (10, 64192), (16, 40120), (17, 37760), (20, 32096), (32, 20060), (34, 18880), (40, 16048), (59, 10880), (64, 10030), (68, 9440), (80, 8024), (85, 7552), (118, 5440), (128, 5015), (136, 4720), (160, 4012), (170, 3776), (236, 2720), (272, 2360), (295, 2176), (320, 2006), (340, 1888), (472, 1360), (544, 1180), (590, 1088), (640, 1003), (680, 944)]