19810350

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{331}}^1$

素因数の和:375

約数の個数: 144

約数和(自身を含む): 64222080

約数和(自身を除く): 44411730

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 25, 30, 35, 38, 42, 45, 50, 57, 63, 70, 75, 90, 95, 105, 114, 126, 133, 150, 171, 175, 190, 210, 225, 266, 285, 315, 331, 342, 350, 399, 450, 475, 525, 570, 630, 662, 665, 798, 855, 950, 993, 1050, 1197, 1330, 1425, 1575, 1655, 1710, 1986, 1995, 2317, 2394, 2850, 2979, 3150, 3310, 3325, 3990, 4275, 4634, 4965, 5958, 5985, 6289, 6650, 6951, 8275, 8550, 9930, 9975, 11585, 11970, 12578, 13902, 14895, 16550, 18867, 19950, 20853, 23170, 24825, 29790, 29925, 31445, 34755, 37734, 41706, 44023, 49650, 56601, 57925, 59850, 62890, 69510, 74475, 88046, 94335, 104265, 113202, 115850, 132069, 148950, 157225, 173775, 188670, 208530, 220115, 264138, 283005, 314450, 347550, 396207, 440230, 471675, 521325, 566010, 660345, 792414, 943350, 1042650, 1100575, 1320690, 1415025, 1981035, 2201150, 2830050, 3301725, 3962070, 6603450, 9905175, 19810350]

約数ペア:

[(1, 19810350), (2, 9905175), (3, 6603450), (5, 3962070), (6, 3301725), (7, 2830050), (9, 2201150), (10, 1981035), (14, 1415025), (15, 1320690), (18, 1100575), (19, 1042650), (21, 943350), (25, 792414), (30, 660345), (35, 566010), (38, 521325), (42, 471675), (45, 440230), (50, 396207), (57, 347550), (63, 314450), (70, 283005), (75, 264138), (90, 220115), (95, 208530), (105, 188670), (114, 173775), (126, 157225), (133, 148950), (150, 132069), (171, 115850), (175, 113202), (190, 104265), (210, 94335), (225, 88046), (266, 74475), (285, 69510), (315, 62890), (331, 59850), (342, 57925), (350, 56601), (399, 49650), (450, 44023), (475, 41706), (525, 37734), (570, 34755), (630, 31445), (662, 29925), (665, 29790), (798, 24825), (855, 23170), (950, 20853), (993, 19950), (1050, 18867), (1197, 16550), (1330, 14895), (1425, 13902), (1575, 12578), (1655, 11970), (1710, 11585), (1986, 9975), (1995, 9930), (2317, 8550), (2394, 8275), (2850, 6951), (2979, 6650), (3150, 6289), (3310, 5985), (3325, 5958), (3990, 4965), (4275, 4634)]