31552780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:319

約数の個数: 96

約数和(自身を含む): 81285120

約数和(自身を除く): 49732340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 41, 46, 70, 82, 92, 115, 140, 161, 164, 205, 230, 239, 287, 322, 410, 460, 478, 574, 644, 805, 820, 943, 956, 1148, 1195, 1435, 1610, 1673, 1886, 2390, 2870, 3220, 3346, 3772, 4715, 4780, 5497, 5740, 6601, 6692, 8365, 9430, 9799, 10994, 13202, 16730, 18860, 19598, 21988, 26404, 27485, 33005, 33460, 38479, 39196, 48995, 54970, 66010, 68593, 76958, 97990, 109940, 132020, 137186, 153916, 192395, 195980, 225377, 274372, 342965, 384790, 450754, 685930, 769580, 901508, 1126885, 1371860, 1577639, 2253770, 3155278, 4507540, 6310556, 7888195, 15776390, 31552780]

約数ペア:

[(1, 31552780), (2, 15776390), (4, 7888195), (5, 6310556), (7, 4507540), (10, 3155278), (14, 2253770), (20, 1577639), (23, 1371860), (28, 1126885), (35, 901508), (41, 769580), (46, 685930), (70, 450754), (82, 384790), (92, 342965), (115, 274372), (140, 225377), (161, 195980), (164, 192395), (205, 153916), (230, 137186), (239, 132020), (287, 109940), (322, 97990), (410, 76958), (460, 68593), (478, 66010), (574, 54970), (644, 48995), (805, 39196), (820, 38479), (943, 33460), (956, 33005), (1148, 27485), (1195, 26404), (1435, 21988), (1610, 19598), (1673, 18860), (1886, 16730), (2390, 13202), (2870, 10994), (3220, 9799), (3346, 9430), (3772, 8365), (4715, 6692), (4780, 6601), (5497, 5740)]