About the Number

78396990

78396989 ← → 78396991

2進数表記:100101011000011111000111110

漢数字表記:七千八百三十九万六千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 577 1 × 647 1

素因数の和:1241
約数の個数: 64
約数和(自身を含む): 215737344
約数和(自身を除く): 137340354

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 577, 647, 1154, 1294, 1731, 1941, 2885, 3235, 3462, 3882, 4039, 4529, 5770, 6470, 8078, 8655, 9058, 9705, 12117, 13587, 17310, 19410, 20195, 22645, 24234, 27174, 40390, 45290, 60585, 67935, 121170, 135870, 373319, 746638, 1119957, 1866595, 2239914, 2613233, 3733190, 5226466, 5599785, 7839699, 11199570, 13066165, 15679398, 26132330, 39198495, 78396990]

約数ペア:
[(1, 78396990), (2, 39198495), (3, 26132330), (5, 15679398), (6, 13066165), (7, 11199570), (10, 7839699), (14, 5599785), (15, 5226466), (21, 3733190), (30, 2613233), (35, 2239914), (42, 1866595), (70, 1119957), (105, 746638), (210, 373319), (577, 135870), (647, 121170), (1154, 67935), (1294, 60585), (1731, 45290), (1941, 40390), (2885, 27174), (3235, 24234), (3462, 22645), (3882, 20195), (4039, 19410), (4529, 17310), (5770, 13587), (6470, 12117), (8078, 9705), (8655, 9058)]

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