2018171920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{10301}}^1$

素因数の和:10424

約数の個数: 80

約数和(自身を含む): 4905400320

約数和(自身を除く): 2887228400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 496, 620, 632, 790, 1240, 1264, 1580, 2449, 2480, 3160, 4898, 6320, 9796, 10301, 12245, 19592, 20602, 24490, 39184, 41204, 48980, 51505, 82408, 97960, 103010, 164816, 195920, 206020, 319331, 412040, 638662, 813779, 824080, 1277324, 1596655, 1627558, 2554648, 3193310, 3255116, 4068895, 5109296, 6386620, 6510232, 8137790, 12773240, 13020464, 16275580, 25227149, 25546480, 32551160, 50454298, 65102320, 100908596, 126135745, 201817192, 252271490, 403634384, 504542980, 1009085960, 2018171920]

約数ペア:

[(1, 2018171920), (2, 1009085960), (4, 504542980), (5, 403634384), (8, 252271490), (10, 201817192), (16, 126135745), (20, 100908596), (31, 65102320), (40, 50454298), (62, 32551160), (79, 25546480), (80, 25227149), (124, 16275580), (155, 13020464), (158, 12773240), (248, 8137790), (310, 6510232), (316, 6386620), (395, 5109296), (496, 4068895), (620, 3255116), (632, 3193310), (790, 2554648), (1240, 1627558), (1264, 1596655), (1580, 1277324), (2449, 824080), (2480, 813779), (3160, 638662), (4898, 412040), (6320, 319331), (9796, 206020), (10301, 195920), (12245, 164816), (19592, 103010), (20602, 97960), (24490, 82408), (39184, 51505), (41204, 48980)]