78437440

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7907}}^1$

素因数の和:7955

約数の個数: 56

約数和(自身を含む): 192828672

約数和(自身を除く): 114391232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 7907, 9920, 15814, 31628, 39535, 63256, 79070, 126512, 158140, 245117, 253024, 316280, 490234, 506048, 632560, 980468, 1225585, 1265120, 1960936, 2451170, 2530240, 3921872, 4902340, 7843744, 9804680, 15687488, 19609360, 39218720, 78437440]

約数ペア:

[(1, 78437440), (2, 39218720), (4, 19609360), (5, 15687488), (8, 9804680), (10, 7843744), (16, 4902340), (20, 3921872), (31, 2530240), (32, 2451170), (40, 1960936), (62, 1265120), (64, 1225585), (80, 980468), (124, 632560), (155, 506048), (160, 490234), (248, 316280), (310, 253024), (320, 245117), (496, 158140), (620, 126512), (992, 79070), (1240, 63256), (1984, 39535), (2480, 31628), (4960, 15814), (7907, 9920)]