77777720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{4973}}^1$

素因数の和:5024

約数の個数: 64

約数和(自身を含む): 193389120

約数和(自身を除く): 115611400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 68, 85, 92, 115, 136, 170, 184, 230, 340, 391, 460, 680, 782, 920, 1564, 1955, 3128, 3910, 4973, 7820, 9946, 15640, 19892, 24865, 39784, 49730, 84541, 99460, 114379, 169082, 198920, 228758, 338164, 422705, 457516, 571895, 676328, 845410, 915032, 1143790, 1690820, 1944443, 2287580, 3381640, 3888886, 4575160, 7777772, 9722215, 15555544, 19444430, 38888860, 77777720]

約数ペア:

[(1, 77777720), (2, 38888860), (4, 19444430), (5, 15555544), (8, 9722215), (10, 7777772), (17, 4575160), (20, 3888886), (23, 3381640), (34, 2287580), (40, 1944443), (46, 1690820), (68, 1143790), (85, 915032), (92, 845410), (115, 676328), (136, 571895), (170, 457516), (184, 422705), (230, 338164), (340, 228758), (391, 198920), (460, 169082), (680, 114379), (782, 99460), (920, 84541), (1564, 49730), (1955, 39784), (3128, 24865), (3910, 19892), (4973, 15640), (7820, 9946)]