About the Number

87742890

87742889 ← → 87742891

2進数表記:101001110101101100110101010

漢数字表記:八千七百七十四万二千八百九十

素因数分解:

2 1 × 3 2 × 5 1 × 47 1 × 20743 1

素因数の和:20803
約数の個数: 48
約数和(自身を含む): 232996608
約数和(自身を除く): 145253718

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 47, 90, 94, 141, 235, 282, 423, 470, 705, 846, 1410, 2115, 4230, 20743, 41486, 62229, 103715, 124458, 186687, 207430, 311145, 373374, 622290, 933435, 974921, 1866870, 1949842, 2924763, 4874605, 5849526, 8774289, 9749210, 14623815, 17548578, 29247630, 43871445, 87742890]

約数ペア:
[(1, 87742890), (2, 43871445), (3, 29247630), (5, 17548578), (6, 14623815), (9, 9749210), (10, 8774289), (15, 5849526), (18, 4874605), (30, 2924763), (45, 1949842), (47, 1866870), (90, 974921), (94, 933435), (141, 622290), (235, 373374), (282, 311145), (423, 207430), (470, 186687), (705, 124458), (846, 103715), (1410, 62229), (2115, 41486), (4230, 20743)]

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