About the Number

1221990

1221989 ← → 1221991

2進数表記:100101010010101100110

漢数字表記:百二十二万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 11 1 × 23 2

素因数の和:74
約数の個数: 96
約数和(自身を含む): 3822336
約数和(自身を除く): 2600346

約数列:
[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 23, 30, 33, 35, 42, 46, 55, 66, 69, 70, 77, 105, 110, 115, 138, 154, 161, 165, 210, 230, 231, 253, 322, 330, 345, 385, 462, 483, 506, 529, 690, 759, 770, 805, 966, 1058, 1155, 1265, 1518, 1587, 1610, 1771, 2310, 2415, 2530, 2645, 3174, 3542, 3703, 3795, 4830, 5290, 5313, 5819, 7406, 7590, 7935, 8855, 10626, 11109, 11638, 15870, 17457, 17710, 18515, 22218, 26565, 29095, 34914, 37030, 40733, 53130, 55545, 58190, 81466, 87285, 111090, 122199, 174570, 203665, 244398, 407330, 610995, 1221990]

約数ペア:
[(1, 1221990), (2, 610995), (3, 407330), (5, 244398), (6, 203665), (7, 174570), (10, 122199), (11, 111090), (14, 87285), (15, 81466), (21, 58190), (22, 55545), (23, 53130), (30, 40733), (33, 37030), (35, 34914), (42, 29095), (46, 26565), (55, 22218), (66, 18515), (69, 17710), (70, 17457), (77, 15870), (105, 11638), (110, 11109), (115, 10626), (138, 8855), (154, 7935), (161, 7590), (165, 7406), (210, 5819), (230, 5313), (231, 5290), (253, 4830), (322, 3795), (330, 3703), (345, 3542), (385, 3174), (462, 2645), (483, 2530), (506, 2415), (529, 2310), (690, 1771), (759, 1610), (770, 1587), (805, 1518), (966, 1265), (1058, 1155)]

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