About the Number

131028750

131028749 ← → 131028751

2進数表記:111110011110101011100001110

漢数字表記:一億三千百二万八千七百五十

素因数分解:

2 1 × 3 2 × 5 4 × 19 1 × 613 1

素因数の和:660
約数の個数: 120
約数和(自身を含む): 374036520
約数和(自身を除く): 243007770

約数列:
[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 30, 38, 45, 50, 57, 75, 90, 95, 114, 125, 150, 171, 190, 225, 250, 285, 342, 375, 450, 475, 570, 613, 625, 750, 855, 950, 1125, 1226, 1250, 1425, 1710, 1839, 1875, 2250, 2375, 2850, 3065, 3678, 3750, 4275, 4750, 5517, 5625, 6130, 7125, 8550, 9195, 11034, 11250, 11647, 11875, 14250, 15325, 18390, 21375, 23294, 23750, 27585, 30650, 34941, 35625, 42750, 45975, 55170, 58235, 69882, 71250, 76625, 91950, 104823, 106875, 116470, 137925, 153250, 174705, 209646, 213750, 229875, 275850, 291175, 349410, 383125, 459750, 524115, 582350, 689625, 766250, 873525, 1048230, 1149375, 1379250, 1455875, 1747050, 2298750, 2620575, 2911750, 3448125, 4367625, 5241150, 6896250, 7279375, 8735250, 13102875, 14558750, 21838125, 26205750, 43676250, 65514375, 131028750]

約数ペア:
[(1, 131028750), (2, 65514375), (3, 43676250), (5, 26205750), (6, 21838125), (9, 14558750), (10, 13102875), (15, 8735250), (18, 7279375), (19, 6896250), (25, 5241150), (30, 4367625), (38, 3448125), (45, 2911750), (50, 2620575), (57, 2298750), (75, 1747050), (90, 1455875), (95, 1379250), (114, 1149375), (125, 1048230), (150, 873525), (171, 766250), (190, 689625), (225, 582350), (250, 524115), (285, 459750), (342, 383125), (375, 349410), (450, 291175), (475, 275850), (570, 229875), (613, 213750), (625, 209646), (750, 174705), (855, 153250), (950, 137925), (1125, 116470), (1226, 106875), (1250, 104823), (1425, 91950), (1710, 76625), (1839, 71250), (1875, 69882), (2250, 58235), (2375, 55170), (2850, 45975), (3065, 42750), (3678, 35625), (3750, 34941), (4275, 30650), (4750, 27585), (5517, 23750), (5625, 23294), (6130, 21375), (7125, 18390), (8550, 15325), (9195, 14250), (11034, 11875), (11250, 11647)]

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