81826020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{911}}^1$

素因数の和:1425

約数の個数: 72

約数和(自身を含む): 248976000

約数和(自身を除く): 167149980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 499, 911, 998, 1497, 1822, 1996, 2495, 2733, 2994, 3644, 4491, 4555, 4990, 5466, 5988, 7485, 8199, 8982, 9110, 9980, 10932, 13665, 14970, 16398, 17964, 18220, 22455, 27330, 29940, 32796, 40995, 44910, 54660, 81990, 89820, 163980, 454589, 909178, 1363767, 1818356, 2272945, 2727534, 4091301, 4545890, 5455068, 6818835, 8182602, 9091780, 13637670, 16365204, 20456505, 27275340, 40913010, 81826020]

約数ペア:

[(1, 81826020), (2, 40913010), (3, 27275340), (4, 20456505), (5, 16365204), (6, 13637670), (9, 9091780), (10, 8182602), (12, 6818835), (15, 5455068), (18, 4545890), (20, 4091301), (30, 2727534), (36, 2272945), (45, 1818356), (60, 1363767), (90, 909178), (180, 454589), (499, 163980), (911, 89820), (998, 81990), (1497, 54660), (1822, 44910), (1996, 40995), (2495, 32796), (2733, 29940), (2994, 27330), (3644, 22455), (4491, 18220), (4555, 17964), (4990, 16398), (5466, 14970), (5988, 13665), (7485, 10932), (8199, 9980), (8982, 9110)]