81369820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{191}}^1$

素因数の和:403

約数の個数: 96

約数和(自身を含む): 209018880

約数和(自身を除く): 127649060

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 179, 191, 238, 340, 358, 382, 476, 595, 716, 764, 895, 955, 1190, 1253, 1337, 1790, 1910, 2380, 2506, 2674, 3043, 3247, 3580, 3820, 5012, 5348, 6086, 6265, 6494, 6685, 12172, 12530, 12988, 13370, 15215, 16235, 21301, 22729, 25060, 26740, 30430, 32470, 34189, 42602, 45458, 60860, 64940, 68378, 85204, 90916, 106505, 113645, 136756, 170945, 213010, 227290, 239323, 341890, 426020, 454580, 478646, 581213, 683780, 957292, 1162426, 1196615, 2324852, 2393230, 2906065, 4068491, 4786460, 5812130, 8136982, 11624260, 16273964, 20342455, 40684910, 81369820]

約数ペア:

[(1, 81369820), (2, 40684910), (4, 20342455), (5, 16273964), (7, 11624260), (10, 8136982), (14, 5812130), (17, 4786460), (20, 4068491), (28, 2906065), (34, 2393230), (35, 2324852), (68, 1196615), (70, 1162426), (85, 957292), (119, 683780), (140, 581213), (170, 478646), (179, 454580), (191, 426020), (238, 341890), (340, 239323), (358, 227290), (382, 213010), (476, 170945), (595, 136756), (716, 113645), (764, 106505), (895, 90916), (955, 85204), (1190, 68378), (1253, 64940), (1337, 60860), (1790, 45458), (1910, 42602), (2380, 34189), (2506, 32470), (2674, 30430), (3043, 26740), (3247, 25060), (3580, 22729), (3820, 21301), (5012, 16235), (5348, 15215), (6086, 13370), (6265, 12988), (6494, 12530), (6685, 12172)]