1821487250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:609

約数の個数: 128

約数和(自身を含む): 3978823680

約数和(自身を除く): 2157336430

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 71, 95, 110, 125, 142, 190, 209, 250, 275, 355, 418, 475, 491, 550, 710, 781, 950, 982, 1045, 1349, 1375, 1562, 1775, 2090, 2375, 2455, 2698, 2750, 3550, 3905, 4750, 4910, 5225, 5401, 6745, 7810, 8875, 9329, 10450, 10802, 12275, 13490, 14839, 17750, 18658, 19525, 24550, 26125, 27005, 29678, 33725, 34861, 39050, 46645, 52250, 54010, 61375, 67450, 69722, 74195, 93290, 97625, 102619, 122750, 135025, 148390, 168625, 174305, 195250, 205238, 233225, 270050, 337250, 348610, 370975, 383471, 466450, 513095, 662359, 675125, 741950, 766942, 871525, 1026190, 1166125, 1324718, 1350250, 1743050, 1854875, 1917355, 2332250, 2565475, 3311795, 3709750, 3834710, 4357625, 5130950, 6623590, 7285949, 8715250, 9586775, 12827375, 14571898, 16558975, 19173550, 25654750, 33117950, 36429745, 47933875, 72859490, 82794875, 95867750, 165589750, 182148725, 364297450, 910743625, 1821487250]

約数ペア:

[(1, 1821487250), (2, 910743625), (5, 364297450), (10, 182148725), (11, 165589750), (19, 95867750), (22, 82794875), (25, 72859490), (38, 47933875), (50, 36429745), (55, 33117950), (71, 25654750), (95, 19173550), (110, 16558975), (125, 14571898), (142, 12827375), (190, 9586775), (209, 8715250), (250, 7285949), (275, 6623590), (355, 5130950), (418, 4357625), (475, 3834710), (491, 3709750), (550, 3311795), (710, 2565475), (781, 2332250), (950, 1917355), (982, 1854875), (1045, 1743050), (1349, 1350250), (1375, 1324718), (1562, 1166125), (1775, 1026190), (2090, 871525), (2375, 766942), (2455, 741950), (2698, 675125), (2750, 662359), (3550, 513095), (3905, 466450), (4750, 383471), (4910, 370975), (5225, 348610), (5401, 337250), (6745, 270050), (7810, 233225), (8875, 205238), (9329, 195250), (10450, 174305), (10802, 168625), (12275, 148390), (13490, 135025), (14839, 122750), (17750, 102619), (18658, 97625), (19525, 93290), (24550, 74195), (26125, 69722), (27005, 67450), (29678, 61375), (33725, 54010), (34861, 52250), (39050, 46645)]