1637289920

素因数分解:

$2^6\times 5^1\times 7^4\times {\mathrm{2131}}^1$

素因数の和:2176

約数の個数: 140

約数和(自身を含む): 4550459784

約数和(自身を除く): 2913169864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 343, 392, 448, 490, 560, 686, 784, 980, 1120, 1372, 1568, 1715, 1960, 2131, 2240, 2401, 2744, 3136, 3430, 3920, 4262, 4802, 5488, 6860, 7840, 8524, 9604, 10655, 10976, 12005, 13720, 14917, 15680, 17048, 19208, 21310, 21952, 24010, 27440, 29834, 34096, 38416, 42620, 48020, 54880, 59668, 68192, 74585, 76832, 85240, 96040, 104419, 109760, 119336, 136384, 149170, 153664, 170480, 192080, 208838, 238672, 298340, 340960, 384160, 417676, 477344, 522095, 596680, 681920, 730933, 768320, 835352, 954688, 1044190, 1193360, 1461866, 1670704, 2088380, 2386720, 2923732, 3341408, 3654665, 4176760, 4773440, 5116531, 5847464, 6682816, 7309330, 8353520, 10233062, 11694928, 14618660, 16707040, 20466124, 23389856, 25582655, 29237320, 33414080, 40932248, 46779712, 51165310, 58474640, 81864496, 102330620, 116949280, 163728992, 204661240, 233898560, 327457984, 409322480, 818644960, 1637289920]

約数ペア:

[(1, 1637289920), (2, 818644960), (4, 409322480), (5, 327457984), (7, 233898560), (8, 204661240), (10, 163728992), (14, 116949280), (16, 102330620), (20, 81864496), (28, 58474640), (32, 51165310), (35, 46779712), (40, 40932248), (49, 33414080), (56, 29237320), (64, 25582655), (70, 23389856), (80, 20466124), (98, 16707040), (112, 14618660), (140, 11694928), (160, 10233062), (196, 8353520), (224, 7309330), (245, 6682816), (280, 5847464), (320, 5116531), (343, 4773440), (392, 4176760), (448, 3654665), (490, 3341408), (560, 2923732), (686, 2386720), (784, 2088380), (980, 1670704), (1120, 1461866), (1372, 1193360), (1568, 1044190), (1715, 954688), (1960, 835352), (2131, 768320), (2240, 730933), (2401, 681920), (2744, 596680), (3136, 522095), (3430, 477344), (3920, 417676), (4262, 384160), (4802, 340960), (5488, 298340), (6860, 238672), (7840, 208838), (8524, 192080), (9604, 170480), (10655, 153664), (10976, 149170), (12005, 136384), (13720, 119336), (14917, 109760), (15680, 104419), (17048, 96040), (19208, 85240), (21310, 76832), (21952, 74585), (24010, 68192), (27440, 59668), (29834, 54880), (34096, 48020), (38416, 42620)]