About the Number

121208910

121208909 ← → 121208911

2進数表記:111001110011000000001001110

漢数字表記:一億二千百二十万八千九百十

素因数分解:

2 1 × 3 1 × 5 1 × 79 1 × 199 1 × 257 1

素因数の和:545
約数の個数: 64
約数和(自身を含む): 297216000
約数和(自身を除く): 176007090

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 79, 158, 199, 237, 257, 395, 398, 474, 514, 597, 771, 790, 995, 1185, 1194, 1285, 1542, 1990, 2370, 2570, 2985, 3855, 5970, 7710, 15721, 20303, 31442, 40606, 47163, 51143, 60909, 78605, 94326, 101515, 102286, 121818, 153429, 157210, 203030, 235815, 255715, 304545, 306858, 471630, 511430, 609090, 767145, 1534290, 4040297, 8080594, 12120891, 20201485, 24241782, 40402970, 60604455, 121208910]

約数ペア:
[(1, 121208910), (2, 60604455), (3, 40402970), (5, 24241782), (6, 20201485), (10, 12120891), (15, 8080594), (30, 4040297), (79, 1534290), (158, 767145), (199, 609090), (237, 511430), (257, 471630), (395, 306858), (398, 304545), (474, 255715), (514, 235815), (597, 203030), (771, 157210), (790, 153429), (995, 121818), (1185, 102286), (1194, 101515), (1285, 94326), (1542, 78605), (1990, 60909), (2370, 51143), (2570, 47163), (2985, 40606), (3855, 31442), (5970, 20303), (7710, 15721)]

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