19949880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2003}}^1$

素因数の和:2100

約数の個数: 64

約数和(自身を含む): 60600960

約数和(自身を除く): 40651080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 83, 120, 166, 249, 332, 415, 498, 664, 830, 996, 1245, 1660, 1992, 2003, 2490, 3320, 4006, 4980, 6009, 8012, 9960, 10015, 12018, 16024, 20030, 24036, 30045, 40060, 48072, 60090, 80120, 120180, 166249, 240360, 332498, 498747, 664996, 831245, 997494, 1329992, 1662490, 1994988, 2493735, 3324980, 3989976, 4987470, 6649960, 9974940, 19949880]

約数ペア:

[(1, 19949880), (2, 9974940), (3, 6649960), (4, 4987470), (5, 3989976), (6, 3324980), (8, 2493735), (10, 1994988), (12, 1662490), (15, 1329992), (20, 997494), (24, 831245), (30, 664996), (40, 498747), (60, 332498), (83, 240360), (120, 166249), (166, 120180), (249, 80120), (332, 60090), (415, 48072), (498, 40060), (664, 30045), (830, 24036), (996, 20030), (1245, 16024), (1660, 12018), (1992, 10015), (2003, 9960), (2490, 8012), (3320, 6009), (4006, 4980)]