19654740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1$

素因数の和:862

約数の個数: 144

約数和(自身を含む): 71809920

約数和(自身を除く): 52155180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 57, 60, 63, 70, 76, 84, 90, 95, 105, 114, 126, 133, 140, 171, 180, 190, 210, 228, 252, 266, 285, 315, 342, 380, 399, 420, 532, 570, 630, 665, 684, 798, 821, 855, 1140, 1197, 1260, 1330, 1596, 1642, 1710, 1995, 2394, 2463, 2660, 3284, 3420, 3990, 4105, 4788, 4926, 5747, 5985, 7389, 7980, 8210, 9852, 11494, 11970, 12315, 14778, 15599, 16420, 17241, 22988, 23940, 24630, 28735, 29556, 31198, 34482, 36945, 46797, 49260, 51723, 57470, 62396, 68964, 73890, 77995, 86205, 93594, 103446, 109193, 114940, 140391, 147780, 155990, 172410, 187188, 206892, 218386, 233985, 258615, 280782, 311980, 327579, 344820, 436772, 467970, 517230, 545965, 561564, 655158, 701955, 935940, 982737, 1034460, 1091930, 1310316, 1403910, 1637895, 1965474, 2183860, 2807820, 3275790, 3930948, 4913685, 6551580, 9827370, 19654740]

約数ペア:

[(1, 19654740), (2, 9827370), (3, 6551580), (4, 4913685), (5, 3930948), (6, 3275790), (7, 2807820), (9, 2183860), (10, 1965474), (12, 1637895), (14, 1403910), (15, 1310316), (18, 1091930), (19, 1034460), (20, 982737), (21, 935940), (28, 701955), (30, 655158), (35, 561564), (36, 545965), (38, 517230), (42, 467970), (45, 436772), (57, 344820), (60, 327579), (63, 311980), (70, 280782), (76, 258615), (84, 233985), (90, 218386), (95, 206892), (105, 187188), (114, 172410), (126, 155990), (133, 147780), (140, 140391), (171, 114940), (180, 109193), (190, 103446), (210, 93594), (228, 86205), (252, 77995), (266, 73890), (285, 68964), (315, 62396), (342, 57470), (380, 51723), (399, 49260), (420, 46797), (532, 36945), (570, 34482), (630, 31198), (665, 29556), (684, 28735), (798, 24630), (821, 23940), (855, 22988), (1140, 17241), (1197, 16420), (1260, 15599), (1330, 14778), (1596, 12315), (1642, 11970), (1710, 11494), (1995, 9852), (2394, 8210), (2463, 7980), (2660, 7389), (3284, 5985), (3420, 5747), (3990, 4926), (4105, 4788)]