31391880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20123}}^1$

素因数の和:20150

約数の個数: 64

約数和(自身を含む): 101424960

約数和(自身を除く): 70033080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 20123, 40246, 60369, 80492, 100615, 120738, 160984, 201230, 241476, 261599, 301845, 402460, 482952, 523198, 603690, 784797, 804920, 1046396, 1207380, 1307995, 1569594, 2092792, 2414760, 2615990, 3139188, 3923985, 5231980, 6278376, 7847970, 10463960, 15695940, 31391880]

約数ペア:

[(1, 31391880), (2, 15695940), (3, 10463960), (4, 7847970), (5, 6278376), (6, 5231980), (8, 3923985), (10, 3139188), (12, 2615990), (13, 2414760), (15, 2092792), (20, 1569594), (24, 1307995), (26, 1207380), (30, 1046396), (39, 804920), (40, 784797), (52, 603690), (60, 523198), (65, 482952), (78, 402460), (104, 301845), (120, 261599), (130, 241476), (156, 201230), (195, 160984), (260, 120738), (312, 100615), (390, 80492), (520, 60369), (780, 40246), (1560, 20123)]