78308820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{991}}^1$

素因数の和:1445

約数の個数: 72

約数和(自身を含む): 238318080

約数和(自身を除く): 160009260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 991, 1317, 1756, 1982, 2195, 2634, 2973, 3951, 3964, 4390, 4955, 5268, 5946, 6585, 7902, 8780, 8919, 9910, 11892, 13170, 14865, 15804, 17838, 19755, 19820, 26340, 29730, 35676, 39510, 44595, 59460, 79020, 89190, 178380, 435049, 870098, 1305147, 1740196, 2175245, 2610294, 3915441, 4350490, 5220588, 6525735, 7830882, 8700980, 13051470, 15661764, 19577205, 26102940, 39154410, 78308820]

約数ペア:

[(1, 78308820), (2, 39154410), (3, 26102940), (4, 19577205), (5, 15661764), (6, 13051470), (9, 8700980), (10, 7830882), (12, 6525735), (15, 5220588), (18, 4350490), (20, 3915441), (30, 2610294), (36, 2175245), (45, 1740196), (60, 1305147), (90, 870098), (180, 435049), (439, 178380), (878, 89190), (991, 79020), (1317, 59460), (1756, 44595), (1982, 39510), (2195, 35676), (2634, 29730), (2973, 26340), (3951, 19820), (3964, 19755), (4390, 17838), (4955, 15804), (5268, 14865), (5946, 13170), (6585, 11892), (7902, 9910), (8780, 8919)]