About the Number

381490380

381490379 ← → 381490381

2進数表記:10110101111010001010011001100

漢数字表記:三億八千百四十九万三百八十

素因数分解:

2 2 × 3 2 × 5 1 × 787 1 × 2693 1

素因数の和:3495
約数の個数: 72
約数和(自身を含む): 1159088112
約数和(自身を除く): 777597732

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 787, 1574, 2361, 2693, 3148, 3935, 4722, 5386, 7083, 7870, 8079, 9444, 10772, 11805, 13465, 14166, 15740, 16158, 23610, 24237, 26930, 28332, 32316, 35415, 40395, 47220, 48474, 53860, 70830, 80790, 96948, 121185, 141660, 161580, 242370, 484740, 2119391, 4238782, 6358173, 8477564, 10596955, 12716346, 19074519, 21193910, 25432692, 31790865, 38149038, 42387820, 63581730, 76298076, 95372595, 127163460, 190745190, 381490380]

約数ペア:
[(1, 381490380), (2, 190745190), (3, 127163460), (4, 95372595), (5, 76298076), (6, 63581730), (9, 42387820), (10, 38149038), (12, 31790865), (15, 25432692), (18, 21193910), (20, 19074519), (30, 12716346), (36, 10596955), (45, 8477564), (60, 6358173), (90, 4238782), (180, 2119391), (787, 484740), (1574, 242370), (2361, 161580), (2693, 141660), (3148, 121185), (3935, 96948), (4722, 80790), (5386, 70830), (7083, 53860), (7870, 48474), (8079, 47220), (9444, 40395), (10772, 35415), (11805, 32316), (13465, 28332), (14166, 26930), (15740, 24237), (16158, 23610)]

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