978173950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{7639}}^1$

素因数の和:7861

約数の個数: 48

約数和(自身を含む): 1969561440

約数和(自身を除く): 991387490

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 197, 325, 394, 650, 985, 1970, 2561, 4925, 5122, 7639, 9850, 12805, 15278, 25610, 38195, 64025, 76390, 99307, 128050, 190975, 198614, 381950, 496535, 993070, 1504883, 2482675, 3009766, 4965350, 7524415, 15048830, 19563479, 37622075, 39126958, 75244150, 97817395, 195634790, 489086975, 978173950]

約数ペア:

[(1, 978173950), (2, 489086975), (5, 195634790), (10, 97817395), (13, 75244150), (25, 39126958), (26, 37622075), (50, 19563479), (65, 15048830), (130, 7524415), (197, 4965350), (325, 3009766), (394, 2482675), (650, 1504883), (985, 993070), (1970, 496535), (2561, 381950), (4925, 198614), (5122, 190975), (7639, 128050), (9850, 99307), (12805, 76390), (15278, 64025), (25610, 38195)]