19994310

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:243

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 42213690

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 71, 90, 105, 126, 135, 142, 149, 189, 210, 213, 270, 298, 315, 355, 378, 426, 447, 497, 630, 639, 710, 745, 894, 945, 994, 1043, 1065, 1278, 1341, 1490, 1491, 1890, 1917, 2086, 2130, 2235, 2485, 2682, 2982, 3129, 3195, 3834, 4023, 4470, 4473, 4970, 5215, 6258, 6390, 6705, 7455, 8046, 8946, 9387, 9585, 10430, 10579, 13410, 13419, 14910, 15645, 18774, 19170, 20115, 21158, 22365, 26838, 28161, 31290, 31737, 40230, 44730, 46935, 52895, 56322, 63474, 67095, 74053, 93870, 95211, 105790, 134190, 140805, 148106, 158685, 190422, 222159, 281610, 285633, 317370, 370265, 444318, 476055, 571266, 666477, 740530, 952110, 1110795, 1332954, 1428165, 1999431, 2221590, 2856330, 3332385, 3998862, 6664770, 9997155, 19994310]

約数ペア:

[(1, 19994310), (2, 9997155), (3, 6664770), (5, 3998862), (6, 3332385), (7, 2856330), (9, 2221590), (10, 1999431), (14, 1428165), (15, 1332954), (18, 1110795), (21, 952110), (27, 740530), (30, 666477), (35, 571266), (42, 476055), (45, 444318), (54, 370265), (63, 317370), (70, 285633), (71, 281610), (90, 222159), (105, 190422), (126, 158685), (135, 148106), (142, 140805), (149, 134190), (189, 105790), (210, 95211), (213, 93870), (270, 74053), (298, 67095), (315, 63474), (355, 56322), (378, 52895), (426, 46935), (447, 44730), (497, 40230), (630, 31737), (639, 31290), (710, 28161), (745, 26838), (894, 22365), (945, 21158), (994, 20115), (1043, 19170), (1065, 18774), (1278, 15645), (1341, 14910), (1490, 13419), (1491, 13410), (1890, 10579), (1917, 10430), (2086, 9585), (2130, 9387), (2235, 8946), (2485, 8046), (2682, 7455), (2982, 6705), (3129, 6390), (3195, 6258), (3834, 5215), (4023, 4970), (4470, 4473)]