1638628740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{3929}}^1$

素因数の和:4282

約数の個数: 144

約数和(自身を含む): 5699191680

約数和(自身を除く): 4060562940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 331, 420, 630, 662, 993, 1260, 1324, 1655, 1986, 2317, 2979, 3310, 3929, 3972, 4634, 4965, 5958, 6620, 6951, 7858, 9268, 9930, 11585, 11787, 11916, 13902, 14895, 15716, 19645, 19860, 20853, 23170, 23574, 27503, 27804, 29790, 34755, 35361, 39290, 41706, 46340, 47148, 55006, 58935, 59580, 69510, 70722, 78580, 82509, 83412, 104265, 110012, 117870, 137515, 139020, 141444, 165018, 176805, 208530, 235740, 247527, 275030, 330036, 353610, 412545, 417060, 495054, 550060, 707220, 825090, 990108, 1237635, 1300499, 1650180, 2475270, 2600998, 3901497, 4950540, 5201996, 6502495, 7802994, 9103493, 11704491, 13004990, 15605988, 18206986, 19507485, 23408982, 26009980, 27310479, 36413972, 39014970, 45517465, 46817964, 54620958, 58522455, 78029940, 81931437, 91034930, 109241916, 117044910, 136552395, 163862874, 182069860, 234089820, 273104790, 327725748, 409657185, 546209580, 819314370, 1638628740]

約数ペア:

[(1, 1638628740), (2, 819314370), (3, 546209580), (4, 409657185), (5, 327725748), (6, 273104790), (7, 234089820), (9, 182069860), (10, 163862874), (12, 136552395), (14, 117044910), (15, 109241916), (18, 91034930), (20, 81931437), (21, 78029940), (28, 58522455), (30, 54620958), (35, 46817964), (36, 45517465), (42, 39014970), (45, 36413972), (60, 27310479), (63, 26009980), (70, 23408982), (84, 19507485), (90, 18206986), (105, 15605988), (126, 13004990), (140, 11704491), (180, 9103493), (210, 7802994), (252, 6502495), (315, 5201996), (331, 4950540), (420, 3901497), (630, 2600998), (662, 2475270), (993, 1650180), (1260, 1300499), (1324, 1237635), (1655, 990108), (1986, 825090), (2317, 707220), (2979, 550060), (3310, 495054), (3929, 417060), (3972, 412545), (4634, 353610), (4965, 330036), (5958, 275030), (6620, 247527), (6951, 235740), (7858, 208530), (9268, 176805), (9930, 165018), (11585, 141444), (11787, 139020), (11916, 137515), (13902, 117870), (14895, 110012), (15716, 104265), (19645, 83412), (19860, 82509), (20853, 78580), (23170, 70722), (23574, 69510), (27503, 59580), (27804, 58935), (29790, 55006), (34755, 47148), (35361, 46340), (39290, 41706)]