640782480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^3$

素因数の和:206

約数の個数: 160

約数和(自身を含む): 2176110720

約数和(自身を除く): 1535328240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 59, 60, 65, 78, 80, 104, 118, 120, 130, 156, 177, 195, 208, 236, 240, 260, 295, 312, 354, 390, 472, 520, 590, 624, 708, 767, 780, 885, 944, 1040, 1180, 1416, 1534, 1560, 1770, 2301, 2360, 2832, 3068, 3120, 3481, 3540, 3835, 4602, 4720, 6136, 6962, 7080, 7670, 9204, 10443, 11505, 12272, 13924, 14160, 15340, 17405, 18408, 20886, 23010, 27848, 30680, 34810, 36816, 41772, 45253, 46020, 52215, 55696, 61360, 69620, 83544, 90506, 92040, 104430, 135759, 139240, 167088, 181012, 184080, 205379, 208860, 226265, 271518, 278480, 362024, 410758, 417720, 452530, 543036, 616137, 678795, 724048, 821516, 835440, 905060, 1026895, 1086072, 1232274, 1357590, 1643032, 1810120, 2053790, 2172144, 2464548, 2669927, 2715180, 3080685, 3286064, 3620240, 4107580, 4929096, 5339854, 5430360, 6161370, 8009781, 8215160, 9858192, 10679708, 10860720, 12322740, 13349635, 16019562, 16430320, 21359416, 24645480, 26699270, 32039124, 40048905, 42718832, 49290960, 53398540, 64078248, 80097810, 106797080, 128156496, 160195620, 213594160, 320391240, 640782480]

約数ペア:

[(1, 640782480), (2, 320391240), (3, 213594160), (4, 160195620), (5, 128156496), (6, 106797080), (8, 80097810), (10, 64078248), (12, 53398540), (13, 49290960), (15, 42718832), (16, 40048905), (20, 32039124), (24, 26699270), (26, 24645480), (30, 21359416), (39, 16430320), (40, 16019562), (48, 13349635), (52, 12322740), (59, 10860720), (60, 10679708), (65, 9858192), (78, 8215160), (80, 8009781), (104, 6161370), (118, 5430360), (120, 5339854), (130, 4929096), (156, 4107580), (177, 3620240), (195, 3286064), (208, 3080685), (236, 2715180), (240, 2669927), (260, 2464548), (295, 2172144), (312, 2053790), (354, 1810120), (390, 1643032), (472, 1357590), (520, 1232274), (590, 1086072), (624, 1026895), (708, 905060), (767, 835440), (780, 821516), (885, 724048), (944, 678795), (1040, 616137), (1180, 543036), (1416, 452530), (1534, 417720), (1560, 410758), (1770, 362024), (2301, 278480), (2360, 271518), (2832, 226265), (3068, 208860), (3120, 205379), (3481, 184080), (3540, 181012), (3835, 167088), (4602, 139240), (4720, 135759), (6136, 104430), (6962, 92040), (7080, 90506), (7670, 83544), (9204, 69620), (10443, 61360), (11505, 55696), (12272, 52215), (13924, 46020), (14160, 45253), (15340, 41772), (17405, 36816), (18408, 34810), (20886, 30680), (23010, 27848)]