203919625

素因数分解:

$5^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 72

約数和(自身を含む): 322192728

約数和(自身を除く): 118273103

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 125, 169, 175, 197, 245, 325, 455, 637, 845, 875, 985, 1183, 1225, 1379, 1625, 2275, 2561, 3185, 4225, 4925, 5915, 6125, 6895, 8281, 9653, 11375, 12805, 15925, 17927, 21125, 24625, 29575, 33293, 34475, 41405, 48265, 64025, 79625, 89635, 125489, 147875, 166465, 172375, 207025, 233051, 241325, 320125, 448175, 627445, 832325, 1035125, 1165255, 1206625, 1631357, 2240875, 3137225, 4161625, 5826275, 8156785, 15686125, 29131375, 40783925, 203919625]

約数ペア:

[(1, 203919625), (5, 40783925), (7, 29131375), (13, 15686125), (25, 8156785), (35, 5826275), (49, 4161625), (65, 3137225), (91, 2240875), (125, 1631357), (169, 1206625), (175, 1165255), (197, 1035125), (245, 832325), (325, 627445), (455, 448175), (637, 320125), (845, 241325), (875, 233051), (985, 207025), (1183, 172375), (1225, 166465), (1379, 147875), (1625, 125489), (2275, 89635), (2561, 79625), (3185, 64025), (4225, 48265), (4925, 41405), (5915, 34475), (6125, 33293), (6895, 29575), (8281, 24625), (9653, 21125), (11375, 17927), (12805, 15925)]