19904910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 49550400

約数和(自身を除く): 29645490

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 73, 122, 146, 149, 183, 219, 298, 305, 365, 366, 438, 447, 610, 730, 745, 894, 915, 1095, 1490, 1830, 2190, 2235, 4453, 4470, 8906, 9089, 10877, 13359, 18178, 21754, 22265, 26718, 27267, 32631, 44530, 45445, 54385, 54534, 65262, 66795, 90890, 108770, 133590, 136335, 163155, 272670, 326310, 663497, 1326994, 1990491, 3317485, 3980982, 6634970, 9952455, 19904910]

約数ペア:

[(1, 19904910), (2, 9952455), (3, 6634970), (5, 3980982), (6, 3317485), (10, 1990491), (15, 1326994), (30, 663497), (61, 326310), (73, 272670), (122, 163155), (146, 136335), (149, 133590), (183, 108770), (219, 90890), (298, 66795), (305, 65262), (365, 54534), (366, 54385), (438, 45445), (447, 44530), (610, 32631), (730, 27267), (745, 26718), (894, 22265), (915, 21754), (1095, 18178), (1490, 13359), (1830, 10877), (2190, 9089), (2235, 8906), (4453, 4470)]