281962850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:157

約数の個数: 144

約数和(自身を含む): 639542400

約数和(自身を除く): 357579550

約数列:

[1, 2, 5, 10, 13, 17, 19, 25, 26, 34, 38, 50, 65, 79, 85, 95, 130, 158, 170, 190, 221, 247, 289, 323, 325, 395, 425, 442, 475, 494, 578, 646, 650, 790, 850, 950, 1027, 1105, 1235, 1343, 1445, 1501, 1615, 1975, 2054, 2210, 2470, 2686, 2890, 3002, 3230, 3757, 3950, 4199, 5135, 5491, 5525, 6175, 6715, 7225, 7505, 7514, 8075, 8398, 10270, 10982, 11050, 12350, 13430, 14450, 15010, 16150, 17459, 18785, 19513, 20995, 22831, 25517, 25675, 27455, 33575, 34918, 37525, 37570, 39026, 41990, 45662, 51034, 51350, 54910, 67150, 71383, 75050, 87295, 93925, 97565, 104975, 114155, 127585, 137275, 142766, 174590, 187850, 195130, 209950, 228310, 255170, 274550, 296803, 331721, 356915, 433789, 436475, 487825, 570775, 593606, 637925, 663442, 713830, 867578, 872950, 975650, 1141550, 1275850, 1484015, 1658605, 1784575, 2168945, 2968030, 3317210, 3569150, 4337890, 5639257, 7420075, 8293025, 10844725, 11278514, 14840150, 16586050, 21689450, 28196285, 56392570, 140981425, 281962850]

約数ペア:

[(1, 281962850), (2, 140981425), (5, 56392570), (10, 28196285), (13, 21689450), (17, 16586050), (19, 14840150), (25, 11278514), (26, 10844725), (34, 8293025), (38, 7420075), (50, 5639257), (65, 4337890), (79, 3569150), (85, 3317210), (95, 2968030), (130, 2168945), (158, 1784575), (170, 1658605), (190, 1484015), (221, 1275850), (247, 1141550), (289, 975650), (323, 872950), (325, 867578), (395, 713830), (425, 663442), (442, 637925), (475, 593606), (494, 570775), (578, 487825), (646, 436475), (650, 433789), (790, 356915), (850, 331721), (950, 296803), (1027, 274550), (1105, 255170), (1235, 228310), (1343, 209950), (1445, 195130), (1501, 187850), (1615, 174590), (1975, 142766), (2054, 137275), (2210, 127585), (2470, 114155), (2686, 104975), (2890, 97565), (3002, 93925), (3230, 87295), (3757, 75050), (3950, 71383), (4199, 67150), (5135, 54910), (5491, 51350), (5525, 51034), (6175, 45662), (6715, 41990), (7225, 39026), (7505, 37570), (7514, 37525), (8075, 34918), (8398, 33575), (10270, 27455), (10982, 25675), (11050, 25517), (12350, 22831), (13430, 20995), (14450, 19513), (15010, 18785), (16150, 17459)]