20163482480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1697}}^1\times {\mathrm{7817}}^1$

素因数の和:9546

約数の個数: 80

約数和(自身を含む): 49382866080

約数和(自身を除く): 29219383600

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 1697, 3394, 6788, 7817, 8485, 13576, 15634, 16970, 27152, 31268, 32243, 33940, 39085, 62536, 64486, 67880, 78170, 125072, 128972, 135760, 148523, 156340, 161215, 257944, 297046, 312680, 322430, 515888, 594092, 625360, 644860, 742615, 1188184, 1289720, 1485230, 2376368, 2579440, 2970460, 5940920, 11881840, 13265449, 26530898, 53061796, 66327245, 106123592, 132654490, 212247184, 252043531, 265308980, 504087062, 530617960, 1008174124, 1061235920, 1260217655, 2016348248, 2520435310, 4032696496, 5040870620, 10081741240, 20163482480]

約数ペア:

[(1, 20163482480), (2, 10081741240), (4, 5040870620), (5, 4032696496), (8, 2520435310), (10, 2016348248), (16, 1260217655), (19, 1061235920), (20, 1008174124), (38, 530617960), (40, 504087062), (76, 265308980), (80, 252043531), (95, 212247184), (152, 132654490), (190, 106123592), (304, 66327245), (380, 53061796), (760, 26530898), (1520, 13265449), (1697, 11881840), (3394, 5940920), (6788, 2970460), (7817, 2579440), (8485, 2376368), (13576, 1485230), (15634, 1289720), (16970, 1188184), (27152, 742615), (31268, 644860), (32243, 625360), (33940, 594092), (39085, 515888), (62536, 322430), (64486, 312680), (67880, 297046), (78170, 257944), (125072, 161215), (128972, 156340), (135760, 148523)]