About the Number

7200990

7200989 ← → 7200991

2進数表記:11011011110000011011110

漢数字表記:七百二十万九百九十

素因数分解:

2 1 × 3 2 × 5 1 × 29 1 × 31 1 × 89 1

素因数の和:162
約数の個数: 96
約数和(自身を含む): 20217600
約数和(自身を除く): 13016610

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 31, 45, 58, 62, 87, 89, 90, 93, 145, 155, 174, 178, 186, 261, 267, 279, 290, 310, 435, 445, 465, 522, 534, 558, 801, 870, 890, 899, 930, 1305, 1335, 1395, 1602, 1798, 2581, 2610, 2670, 2697, 2759, 2790, 4005, 4495, 5162, 5394, 5518, 7743, 8010, 8091, 8277, 8990, 12905, 13485, 13795, 15486, 16182, 16554, 23229, 24831, 25810, 26970, 27590, 38715, 40455, 41385, 46458, 49662, 77430, 80011, 80910, 82770, 116145, 124155, 160022, 232290, 240033, 248310, 400055, 480066, 720099, 800110, 1200165, 1440198, 2400330, 3600495, 7200990]

約数ペア:
[(1, 7200990), (2, 3600495), (3, 2400330), (5, 1440198), (6, 1200165), (9, 800110), (10, 720099), (15, 480066), (18, 400055), (29, 248310), (30, 240033), (31, 232290), (45, 160022), (58, 124155), (62, 116145), (87, 82770), (89, 80910), (90, 80011), (93, 77430), (145, 49662), (155, 46458), (174, 41385), (178, 40455), (186, 38715), (261, 27590), (267, 26970), (279, 25810), (290, 24831), (310, 23229), (435, 16554), (445, 16182), (465, 15486), (522, 13795), (534, 13485), (558, 12905), (801, 8990), (870, 8277), (890, 8091), (899, 8010), (930, 7743), (1305, 5518), (1335, 5394), (1395, 5162), (1602, 4495), (1798, 4005), (2581, 2790), (2610, 2759), (2670, 2697)]

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