77981120

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1123}}^1$

素因数の和:1178

約数の個数: 112

約数和(自身を含む): 219260928

約数和(自身を除く): 141279808

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 868, 992, 1085, 1120, 1123, 1240, 1736, 1984, 2170, 2240, 2246, 2480, 3472, 4340, 4492, 4960, 5615, 6944, 7861, 8680, 8984, 9920, 11230, 13888, 15722, 17360, 17968, 22460, 31444, 34720, 34813, 35936, 39305, 44920, 62888, 69440, 69626, 71872, 78610, 89840, 125776, 139252, 157220, 174065, 179680, 243691, 251552, 278504, 314440, 348130, 359360, 487382, 503104, 557008, 628880, 696260, 974764, 1114016, 1218455, 1257760, 1392520, 1949528, 2228032, 2436910, 2515520, 2785040, 3899056, 4873820, 5570080, 7798112, 9747640, 11140160, 15596224, 19495280, 38990560, 77981120]

約数ペア:

[(1, 77981120), (2, 38990560), (4, 19495280), (5, 15596224), (7, 11140160), (8, 9747640), (10, 7798112), (14, 5570080), (16, 4873820), (20, 3899056), (28, 2785040), (31, 2515520), (32, 2436910), (35, 2228032), (40, 1949528), (56, 1392520), (62, 1257760), (64, 1218455), (70, 1114016), (80, 974764), (112, 696260), (124, 628880), (140, 557008), (155, 503104), (160, 487382), (217, 359360), (224, 348130), (248, 314440), (280, 278504), (310, 251552), (320, 243691), (434, 179680), (448, 174065), (496, 157220), (560, 139252), (620, 125776), (868, 89840), (992, 78610), (1085, 71872), (1120, 69626), (1123, 69440), (1240, 62888), (1736, 44920), (1984, 39305), (2170, 35936), (2240, 34813), (2246, 34720), (2480, 31444), (3472, 22460), (4340, 17968), (4492, 17360), (4960, 15722), (5615, 13888), (6944, 11230), (7861, 9920), (8680, 8984)]