18640736

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 38782800

約数和(自身を除く): 20142064

約数列:

[1, 2, 4, 8, 16, 29, 32, 53, 58, 106, 116, 212, 232, 379, 424, 464, 758, 848, 928, 1516, 1537, 1696, 3032, 3074, 6064, 6148, 10991, 12128, 12296, 20087, 21982, 24592, 40174, 43964, 49184, 80348, 87928, 160696, 175856, 321392, 351712, 582523, 642784, 1165046, 2330092, 4660184, 9320368, 18640736]

約数ペア:

[(1, 18640736), (2, 9320368), (4, 4660184), (8, 2330092), (16, 1165046), (29, 642784), (32, 582523), (53, 351712), (58, 321392), (106, 175856), (116, 160696), (212, 87928), (232, 80348), (379, 49184), (424, 43964), (464, 40174), (758, 24592), (848, 21982), (928, 20087), (1516, 12296), (1537, 12128), (1696, 10991), (3032, 6148), (3074, 6064)]