81995940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{523}}^1$

素因数の和:618

約数の個数: 144

約数和(自身を含む): 272371008

約数和(自身を除く): 190375068

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 67, 78, 90, 117, 130, 134, 156, 180, 195, 201, 234, 260, 268, 335, 390, 402, 468, 523, 585, 603, 670, 780, 804, 871, 1005, 1046, 1170, 1206, 1340, 1569, 1742, 2010, 2092, 2340, 2412, 2613, 2615, 3015, 3138, 3484, 4020, 4355, 4707, 5226, 5230, 6030, 6276, 6799, 7839, 7845, 8710, 9414, 10452, 10460, 12060, 13065, 13598, 15678, 15690, 17420, 18828, 20397, 23535, 26130, 27196, 31356, 31380, 33995, 35041, 39195, 40794, 47070, 52260, 61191, 67990, 70082, 78390, 81588, 94140, 101985, 105123, 122382, 135980, 140164, 156780, 175205, 203970, 210246, 244764, 305955, 315369, 350410, 407940, 420492, 455533, 525615, 611910, 630738, 700820, 911066, 1051230, 1223820, 1261476, 1366599, 1576845, 1822132, 2102460, 2277665, 2733198, 3153690, 4099797, 4555330, 5466396, 6307380, 6832995, 8199594, 9110660, 13665990, 16399188, 20498985, 27331980, 40997970, 81995940]

約数ペア:

[(1, 81995940), (2, 40997970), (3, 27331980), (4, 20498985), (5, 16399188), (6, 13665990), (9, 9110660), (10, 8199594), (12, 6832995), (13, 6307380), (15, 5466396), (18, 4555330), (20, 4099797), (26, 3153690), (30, 2733198), (36, 2277665), (39, 2102460), (45, 1822132), (52, 1576845), (60, 1366599), (65, 1261476), (67, 1223820), (78, 1051230), (90, 911066), (117, 700820), (130, 630738), (134, 611910), (156, 525615), (180, 455533), (195, 420492), (201, 407940), (234, 350410), (260, 315369), (268, 305955), (335, 244764), (390, 210246), (402, 203970), (468, 175205), (523, 156780), (585, 140164), (603, 135980), (670, 122382), (780, 105123), (804, 101985), (871, 94140), (1005, 81588), (1046, 78390), (1170, 70082), (1206, 67990), (1340, 61191), (1569, 52260), (1742, 47070), (2010, 40794), (2092, 39195), (2340, 35041), (2412, 33995), (2613, 31380), (2615, 31356), (3015, 27196), (3138, 26130), (3484, 23535), (4020, 20397), (4355, 18828), (4707, 17420), (5226, 15690), (5230, 15678), (6030, 13598), (6276, 13065), (6799, 12060), (7839, 10460), (7845, 10452), (8710, 9414)]