640802540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{3373}}^1$

素因数の和:3471

約数の個数: 96

約数和(自身を含む): 1632476160

約数和(自身を除く): 991673620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 59, 70, 92, 115, 118, 140, 161, 230, 236, 295, 322, 413, 460, 590, 644, 805, 826, 1180, 1357, 1610, 1652, 2065, 2714, 3220, 3373, 4130, 5428, 6746, 6785, 8260, 9499, 13492, 13570, 16865, 18998, 23611, 27140, 33730, 37996, 47222, 47495, 67460, 77579, 94444, 94990, 118055, 155158, 189980, 199007, 236110, 310316, 387895, 398014, 472220, 543053, 775790, 796028, 995035, 1086106, 1393049, 1551580, 1990070, 2172212, 2715265, 2786098, 3980140, 4577161, 5430530, 5572196, 6965245, 9154322, 10861060, 13930490, 18308644, 22885805, 27860980, 32040127, 45771610, 64080254, 91543220, 128160508, 160200635, 320401270, 640802540]

約数ペア:

[(1, 640802540), (2, 320401270), (4, 160200635), (5, 128160508), (7, 91543220), (10, 64080254), (14, 45771610), (20, 32040127), (23, 27860980), (28, 22885805), (35, 18308644), (46, 13930490), (59, 10861060), (70, 9154322), (92, 6965245), (115, 5572196), (118, 5430530), (140, 4577161), (161, 3980140), (230, 2786098), (236, 2715265), (295, 2172212), (322, 1990070), (413, 1551580), (460, 1393049), (590, 1086106), (644, 995035), (805, 796028), (826, 775790), (1180, 543053), (1357, 472220), (1610, 398014), (1652, 387895), (2065, 310316), (2714, 236110), (3220, 199007), (3373, 189980), (4130, 155158), (5428, 118055), (6746, 94990), (6785, 94444), (8260, 77579), (9499, 67460), (13492, 47495), (13570, 47222), (16865, 37996), (18998, 33730), (23611, 27140)]