21391944

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 61501440

約数和(自身を除く): 40109496

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 223, 446, 571, 669, 892, 1142, 1338, 1561, 1713, 1784, 2284, 2676, 3122, 3426, 3997, 4568, 4683, 5352, 6244, 6852, 7994, 9366, 11991, 12488, 13704, 15988, 18732, 23982, 31976, 37464, 47964, 95928, 127333, 254666, 381999, 509332, 763998, 891331, 1018664, 1527996, 1782662, 2673993, 3055992, 3565324, 5347986, 7130648, 10695972, 21391944]

約数ペア:

[(1, 21391944), (2, 10695972), (3, 7130648), (4, 5347986), (6, 3565324), (7, 3055992), (8, 2673993), (12, 1782662), (14, 1527996), (21, 1018664), (24, 891331), (28, 763998), (42, 509332), (56, 381999), (84, 254666), (168, 127333), (223, 95928), (446, 47964), (571, 37464), (669, 31976), (892, 23982), (1142, 18732), (1338, 15988), (1561, 13704), (1713, 12488), (1784, 11991), (2284, 9366), (2676, 7994), (3122, 6852), (3426, 6244), (3997, 5352), (4568, 4683)]