About the Number

218971390

218971389 ← → 218971391

2進数表記:1101000011010011110011111110

漢数字表記:二億千八百九十七万千三百九十

素因数分解:

2 1 × 5 1 × 11 1 × 17 1 × 19 1 × 6163 1

素因数の和:6217
約数の個数: 64
約数和(自身を含む): 479312640
約数和(自身を除く): 260341250

約数列:
[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 55, 85, 95, 110, 170, 187, 190, 209, 323, 374, 418, 646, 935, 1045, 1615, 1870, 2090, 3230, 3553, 6163, 7106, 12326, 17765, 30815, 35530, 61630, 67793, 104771, 117097, 135586, 209542, 234194, 338965, 523855, 585485, 677930, 1047710, 1152481, 1170970, 1288067, 1990649, 2304962, 2576134, 3981298, 5762405, 6440335, 9953245, 11524810, 12880670, 19906490, 21897139, 43794278, 109485695, 218971390]

約数ペア:
[(1, 218971390), (2, 109485695), (5, 43794278), (10, 21897139), (11, 19906490), (17, 12880670), (19, 11524810), (22, 9953245), (34, 6440335), (38, 5762405), (55, 3981298), (85, 2576134), (95, 2304962), (110, 1990649), (170, 1288067), (187, 1170970), (190, 1152481), (209, 1047710), (323, 677930), (374, 585485), (418, 523855), (646, 338965), (935, 234194), (1045, 209542), (1615, 135586), (1870, 117097), (2090, 104771), (3230, 67793), (3553, 61630), (6163, 35530), (7106, 30815), (12326, 17765)]

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