17940461980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{142543}}^1$

素因数の和:142619

約数の個数: 96

約数和(自身を含む): 45978992640

約数和(自身を除く): 28038530660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 31, 35, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 290, 310, 406, 434, 580, 620, 812, 868, 899, 1015, 1085, 1798, 2030, 2170, 3596, 4060, 4340, 4495, 6293, 8990, 12586, 17980, 25172, 31465, 62930, 125860, 142543, 285086, 570172, 712715, 997801, 1425430, 1995602, 2850860, 3991204, 4133747, 4418833, 4989005, 8267494, 8837666, 9978010, 16534988, 17675332, 19956020, 20668735, 22094165, 28936229, 30931831, 41337470, 44188330, 57872458, 61863662, 82674940, 88376660, 115744916, 123727324, 128146157, 144681145, 154659155, 256292314, 289362290, 309318310, 512584628, 578724580, 618636620, 640730785, 897023099, 1281461570, 1794046198, 2562923140, 3588092396, 4485115495, 8970230990, 17940461980]

約数ペア:

[(1, 17940461980), (2, 8970230990), (4, 4485115495), (5, 3588092396), (7, 2562923140), (10, 1794046198), (14, 1281461570), (20, 897023099), (28, 640730785), (29, 618636620), (31, 578724580), (35, 512584628), (58, 309318310), (62, 289362290), (70, 256292314), (116, 154659155), (124, 144681145), (140, 128146157), (145, 123727324), (155, 115744916), (203, 88376660), (217, 82674940), (290, 61863662), (310, 57872458), (406, 44188330), (434, 41337470), (580, 30931831), (620, 28936229), (812, 22094165), (868, 20668735), (899, 19956020), (1015, 17675332), (1085, 16534988), (1798, 9978010), (2030, 8837666), (2170, 8267494), (3596, 4989005), (4060, 4418833), (4340, 4133747), (4495, 3991204), (6293, 2850860), (8990, 1995602), (12586, 1425430), (17980, 997801), (25172, 712715), (31465, 570172), (62930, 285086), (125860, 142543)]