31220673516

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{607}}^1\times {\mathrm{20123}}^1$

素因数の和:20811

約数の個数: 72

約数和(自身を含む): 80166288384

約数和(自身を除く): 48945614868

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 607, 639, 852, 1214, 1278, 1821, 2428, 2556, 3642, 5463, 7284, 10926, 20123, 21852, 40246, 43097, 60369, 80492, 86194, 120738, 129291, 172388, 181107, 241476, 258582, 362214, 387873, 517164, 724428, 775746, 1428733, 1551492, 2857466, 4286199, 5714932, 8572398, 12214661, 12858597, 17144796, 24429322, 25717194, 36643983, 48858644, 51434388, 73287966, 109931949, 146575932, 219863898, 439727796, 867240931, 1734481862, 2601722793, 3468963724, 5203445586, 7805168379, 10406891172, 15610336758, 31220673516]

約数ペア:

[(1, 31220673516), (2, 15610336758), (3, 10406891172), (4, 7805168379), (6, 5203445586), (9, 3468963724), (12, 2601722793), (18, 1734481862), (36, 867240931), (71, 439727796), (142, 219863898), (213, 146575932), (284, 109931949), (426, 73287966), (607, 51434388), (639, 48858644), (852, 36643983), (1214, 25717194), (1278, 24429322), (1821, 17144796), (2428, 12858597), (2556, 12214661), (3642, 8572398), (5463, 5714932), (7284, 4286199), (10926, 2857466), (20123, 1551492), (21852, 1428733), (40246, 775746), (43097, 724428), (60369, 517164), (80492, 387873), (86194, 362214), (120738, 258582), (129291, 241476), (172388, 181107)]