61720100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{241}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 145568808

約数和(自身を除く): 83848708

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 197, 241, 260, 325, 394, 482, 650, 788, 964, 985, 1205, 1300, 1970, 2410, 2561, 3133, 3940, 4820, 4925, 5122, 6025, 6266, 9850, 10244, 12050, 12532, 12805, 15665, 19700, 24100, 25610, 31330, 47477, 51220, 62660, 64025, 78325, 94954, 128050, 156650, 189908, 237385, 256100, 313300, 474770, 617201, 949540, 1186925, 1234402, 2373850, 2468804, 3086005, 4747700, 6172010, 12344020, 15430025, 30860050, 61720100]

約数ペア:

[(1, 61720100), (2, 30860050), (4, 15430025), (5, 12344020), (10, 6172010), (13, 4747700), (20, 3086005), (25, 2468804), (26, 2373850), (50, 1234402), (52, 1186925), (65, 949540), (100, 617201), (130, 474770), (197, 313300), (241, 256100), (260, 237385), (325, 189908), (394, 156650), (482, 128050), (650, 94954), (788, 78325), (964, 64025), (985, 62660), (1205, 51220), (1300, 47477), (1970, 31330), (2410, 25610), (2561, 24100), (3133, 19700), (3940, 15665), (4820, 12805), (4925, 12532), (5122, 12050), (6025, 10244), (6266, 9850)]