20163640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 56401920

約数和(自身を除く): 36238280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 31, 35, 40, 46, 56, 62, 70, 92, 101, 115, 124, 140, 155, 161, 184, 202, 217, 230, 248, 280, 310, 322, 404, 434, 460, 505, 620, 644, 707, 713, 805, 808, 868, 920, 1010, 1085, 1240, 1288, 1414, 1426, 1610, 1736, 2020, 2170, 2323, 2828, 2852, 3131, 3220, 3535, 3565, 4040, 4340, 4646, 4991, 5656, 5704, 6262, 6440, 7070, 7130, 8680, 9292, 9982, 11615, 12524, 14140, 14260, 15655, 16261, 18584, 19964, 21917, 23230, 24955, 25048, 28280, 28520, 31310, 32522, 39928, 43834, 46460, 49910, 62620, 65044, 72013, 81305, 87668, 92920, 99820, 109585, 125240, 130088, 144026, 162610, 175336, 199640, 219170, 288052, 325220, 360065, 438340, 504091, 576104, 650440, 720130, 876680, 1008182, 1440260, 2016364, 2520455, 2880520, 4032728, 5040910, 10081820, 20163640]

約数ペア:

[(1, 20163640), (2, 10081820), (4, 5040910), (5, 4032728), (7, 2880520), (8, 2520455), (10, 2016364), (14, 1440260), (20, 1008182), (23, 876680), (28, 720130), (31, 650440), (35, 576104), (40, 504091), (46, 438340), (56, 360065), (62, 325220), (70, 288052), (92, 219170), (101, 199640), (115, 175336), (124, 162610), (140, 144026), (155, 130088), (161, 125240), (184, 109585), (202, 99820), (217, 92920), (230, 87668), (248, 81305), (280, 72013), (310, 65044), (322, 62620), (404, 49910), (434, 46460), (460, 43834), (505, 39928), (620, 32522), (644, 31310), (707, 28520), (713, 28280), (805, 25048), (808, 24955), (868, 23230), (920, 21917), (1010, 19964), (1085, 18584), (1240, 16261), (1288, 15655), (1414, 14260), (1426, 14140), (1610, 12524), (1736, 11615), (2020, 9982), (2170, 9292), (2323, 8680), (2828, 7130), (2852, 7070), (3131, 6440), (3220, 6262), (3535, 5704), (3565, 5656), (4040, 4991), (4340, 4646)]