16921970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:100

約数の個数: 96

約数和(自身を含む): 37946880

約数和(自身を除く): 21024910

約数列:

[1, 2, 5, 10, 13, 17, 19, 26, 31, 34, 38, 62, 65, 85, 95, 130, 155, 169, 170, 190, 221, 247, 310, 323, 338, 403, 442, 494, 527, 589, 646, 806, 845, 1054, 1105, 1178, 1235, 1615, 1690, 2015, 2210, 2470, 2635, 2873, 2945, 3211, 3230, 4030, 4199, 5239, 5270, 5746, 5890, 6422, 6851, 7657, 8398, 10013, 10478, 13702, 14365, 15314, 16055, 20026, 20995, 26195, 28730, 32110, 34255, 38285, 41990, 50065, 52390, 54587, 68510, 76570, 89063, 99541, 100130, 109174, 130169, 178126, 199082, 260338, 272935, 445315, 497705, 545870, 650845, 890630, 995410, 1301690, 1692197, 3384394, 8460985, 16921970]

約数ペア:

[(1, 16921970), (2, 8460985), (5, 3384394), (10, 1692197), (13, 1301690), (17, 995410), (19, 890630), (26, 650845), (31, 545870), (34, 497705), (38, 445315), (62, 272935), (65, 260338), (85, 199082), (95, 178126), (130, 130169), (155, 109174), (169, 100130), (170, 99541), (190, 89063), (221, 76570), (247, 68510), (310, 54587), (323, 52390), (338, 50065), (403, 41990), (442, 38285), (494, 34255), (527, 32110), (589, 28730), (646, 26195), (806, 20995), (845, 20026), (1054, 16055), (1105, 15314), (1178, 14365), (1235, 13702), (1615, 10478), (1690, 10013), (2015, 8398), (2210, 7657), (2470, 6851), (2635, 6422), (2873, 5890), (2945, 5746), (3211, 5270), (3230, 5239), (4030, 4199)]