About the Number

1287996990

1287996989 ← → 1287996991

2進数表記:1001100110001010100011000111110

漢数字表記:十二億八千七百九十九万六千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 31 1 × 53 1 × 3733 1

素因数の和:3834
約数の個数: 128
約数和(自身を含む): 3716554752
約数和(自身を除く): 2428557762

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 31, 35, 42, 53, 62, 70, 93, 105, 106, 155, 159, 186, 210, 217, 265, 310, 318, 371, 434, 465, 530, 651, 742, 795, 930, 1085, 1113, 1302, 1590, 1643, 1855, 2170, 2226, 3255, 3286, 3710, 3733, 4929, 5565, 6510, 7466, 8215, 9858, 11130, 11199, 11501, 16430, 18665, 22398, 23002, 24645, 26131, 34503, 37330, 49290, 52262, 55995, 57505, 69006, 78393, 111990, 115010, 115723, 130655, 156786, 172515, 197849, 231446, 261310, 345030, 347169, 391965, 395698, 578615, 593547, 694338, 783930, 810061, 989245, 1157230, 1187094, 1384943, 1620122, 1735845, 1978490, 2430183, 2769886, 2967735, 3471690, 4050305, 4154829, 4860366, 5935470, 6133319, 6924715, 8100610, 8309658, 12150915, 12266638, 13849430, 18399957, 20774145, 24301830, 30666595, 36799914, 41548290, 42933233, 61333190, 85866466, 91999785, 128799699, 183999570, 214666165, 257599398, 429332330, 643998495, 1287996990]

約数ペア:
[(1, 1287996990), (2, 643998495), (3, 429332330), (5, 257599398), (6, 214666165), (7, 183999570), (10, 128799699), (14, 91999785), (15, 85866466), (21, 61333190), (30, 42933233), (31, 41548290), (35, 36799914), (42, 30666595), (53, 24301830), (62, 20774145), (70, 18399957), (93, 13849430), (105, 12266638), (106, 12150915), (155, 8309658), (159, 8100610), (186, 6924715), (210, 6133319), (217, 5935470), (265, 4860366), (310, 4154829), (318, 4050305), (371, 3471690), (434, 2967735), (465, 2769886), (530, 2430183), (651, 1978490), (742, 1735845), (795, 1620122), (930, 1384943), (1085, 1187094), (1113, 1157230), (1302, 989245), (1590, 810061), (1643, 783930), (1855, 694338), (2170, 593547), (2226, 578615), (3255, 395698), (3286, 391965), (3710, 347169), (3733, 345030), (4929, 261310), (5565, 231446), (6510, 197849), (7466, 172515), (8215, 156786), (9858, 130655), (11130, 115723), (11199, 115010), (11501, 111990), (16430, 78393), (18665, 69006), (22398, 57505), (23002, 55995), (24645, 52262), (26131, 49290), (34503, 37330)]

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