About the Number

728190

728189 ← → 728191

2進数表記:10110001110001111110

漢数字表記:七十二万八千百九十

素因数分解:

2 1 × 3 4 × 5 1 × 29 1 × 31 1

素因数の和:79
約数の個数: 80
約数和(自身を含む): 2090880
約数和(自身を除く): 1362690

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 31, 45, 54, 58, 62, 81, 87, 90, 93, 135, 145, 155, 162, 174, 186, 261, 270, 279, 290, 310, 405, 435, 465, 522, 558, 783, 810, 837, 870, 899, 930, 1305, 1395, 1566, 1674, 1798, 2349, 2511, 2610, 2697, 2790, 3915, 4185, 4495, 4698, 5022, 5394, 7830, 8091, 8370, 8990, 11745, 12555, 13485, 16182, 23490, 24273, 25110, 26970, 40455, 48546, 72819, 80910, 121365, 145638, 242730, 364095, 728190]

約数ペア:
[(1, 728190), (2, 364095), (3, 242730), (5, 145638), (6, 121365), (9, 80910), (10, 72819), (15, 48546), (18, 40455), (27, 26970), (29, 25110), (30, 24273), (31, 23490), (45, 16182), (54, 13485), (58, 12555), (62, 11745), (81, 8990), (87, 8370), (90, 8091), (93, 7830), (135, 5394), (145, 5022), (155, 4698), (162, 4495), (174, 4185), (186, 3915), (261, 2790), (270, 2697), (279, 2610), (290, 2511), (310, 2349), (405, 1798), (435, 1674), (465, 1566), (522, 1395), (558, 1305), (783, 930), (810, 899), (837, 870)]

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