About the Number

28784490

28784489 ← → 28784491

2進数表記:1101101110011011101101010

漢数字表記:二千八百七十八万四千四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 113 1 × 1213 1

素因数の和:1343
約数の個数: 64
約数和(自身を含む): 79716096
約数和(自身を除く): 50931606

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 113, 210, 226, 339, 565, 678, 791, 1130, 1213, 1582, 1695, 2373, 2426, 3390, 3639, 3955, 4746, 6065, 7278, 7910, 8491, 11865, 12130, 16982, 18195, 23730, 25473, 36390, 42455, 50946, 84910, 127365, 137069, 254730, 274138, 411207, 685345, 822414, 959483, 1370690, 1918966, 2056035, 2878449, 4112070, 4797415, 5756898, 9594830, 14392245, 28784490]

約数ペア:
[(1, 28784490), (2, 14392245), (3, 9594830), (5, 5756898), (6, 4797415), (7, 4112070), (10, 2878449), (14, 2056035), (15, 1918966), (21, 1370690), (30, 959483), (35, 822414), (42, 685345), (70, 411207), (105, 274138), (113, 254730), (210, 137069), (226, 127365), (339, 84910), (565, 50946), (678, 42455), (791, 36390), (1130, 25473), (1213, 23730), (1582, 18195), (1695, 16982), (2373, 12130), (2426, 11865), (3390, 8491), (3639, 7910), (3955, 7278), (4746, 6065)]

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