About the Number

131988390

131988389 ← → 131988391

2進数表記:111110111011111101110100110

漢数字表記:一億三千百九十八万八千三百九十

素因数分解:

2 1 × 3 1 × 5 1 × 31 1 × 347 1 × 409 1

素因数の和:797
約数の個数: 64
約数和(自身を含む): 328734720
約数和(自身を除く): 196746330

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 347, 409, 465, 694, 818, 930, 1041, 1227, 1735, 2045, 2082, 2454, 3470, 4090, 5205, 6135, 10410, 10757, 12270, 12679, 21514, 25358, 32271, 38037, 53785, 63395, 64542, 76074, 107570, 126790, 141923, 161355, 190185, 283846, 322710, 380370, 425769, 709615, 851538, 1419230, 2128845, 4257690, 4399613, 8799226, 13198839, 21998065, 26397678, 43996130, 65994195, 131988390]

約数ペア:
[(1, 131988390), (2, 65994195), (3, 43996130), (5, 26397678), (6, 21998065), (10, 13198839), (15, 8799226), (30, 4399613), (31, 4257690), (62, 2128845), (93, 1419230), (155, 851538), (186, 709615), (310, 425769), (347, 380370), (409, 322710), (465, 283846), (694, 190185), (818, 161355), (930, 141923), (1041, 126790), (1227, 107570), (1735, 76074), (2045, 64542), (2082, 63395), (2454, 53785), (3470, 38037), (4090, 32271), (5205, 25358), (6135, 21514), (10410, 12679), (10757, 12270)]

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