18858880

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{373}}^1$

素因数の和:471

約数の個数: 64

約数和(自身を含む): 45777600

約数和(自身を除く): 26918720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 373, 395, 632, 640, 746, 790, 1264, 1492, 1580, 1865, 2528, 2984, 3160, 3730, 5056, 5968, 6320, 7460, 10112, 11936, 12640, 14920, 23872, 25280, 29467, 29840, 47744, 50560, 58934, 59680, 117868, 119360, 147335, 235736, 238720, 294670, 471472, 589340, 942944, 1178680, 1885888, 2357360, 3771776, 4714720, 9429440, 18858880]

約数ペア:

[(1, 18858880), (2, 9429440), (4, 4714720), (5, 3771776), (8, 2357360), (10, 1885888), (16, 1178680), (20, 942944), (32, 589340), (40, 471472), (64, 294670), (79, 238720), (80, 235736), (128, 147335), (158, 119360), (160, 117868), (316, 59680), (320, 58934), (373, 50560), (395, 47744), (632, 29840), (640, 29467), (746, 25280), (790, 23872), (1264, 14920), (1492, 12640), (1580, 11936), (1865, 10112), (2528, 7460), (2984, 6320), (3160, 5968), (3730, 5056)]