1639654780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:308

約数の個数: 144

約数和(自身を含む): 3871203840

約数和(自身を除く): 2231549060

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 41, 58, 76, 82, 95, 116, 145, 164, 190, 191, 205, 290, 361, 380, 382, 410, 551, 580, 722, 764, 779, 820, 955, 1102, 1189, 1444, 1558, 1805, 1910, 2204, 2378, 2755, 3116, 3610, 3629, 3820, 3895, 4756, 5510, 5539, 5945, 7220, 7258, 7790, 7831, 10469, 11020, 11078, 11890, 14516, 14801, 15580, 15662, 18145, 20938, 22156, 22591, 23780, 27695, 29602, 31324, 36290, 39155, 41876, 45182, 52345, 55390, 59204, 68951, 72580, 74005, 78310, 90364, 104690, 105241, 110780, 112955, 137902, 148010, 148789, 156620, 209380, 210482, 225910, 227099, 275804, 296020, 297578, 344755, 420964, 429229, 451820, 454198, 526205, 595156, 689510, 743945, 858458, 908396, 1052410, 1135495, 1379020, 1487890, 1716916, 1999579, 2104820, 2146145, 2270990, 2826991, 2975780, 3999158, 4292290, 4314881, 4541980, 5653982, 7998316, 8584580, 8629762, 9997895, 11307964, 14134955, 17259524, 19995790, 21574405, 28269910, 39991580, 43148810, 56539820, 81982739, 86297620, 163965478, 327930956, 409913695, 819827390, 1639654780]

約数ペア:

[(1, 1639654780), (2, 819827390), (4, 409913695), (5, 327930956), (10, 163965478), (19, 86297620), (20, 81982739), (29, 56539820), (38, 43148810), (41, 39991580), (58, 28269910), (76, 21574405), (82, 19995790), (95, 17259524), (116, 14134955), (145, 11307964), (164, 9997895), (190, 8629762), (191, 8584580), (205, 7998316), (290, 5653982), (361, 4541980), (380, 4314881), (382, 4292290), (410, 3999158), (551, 2975780), (580, 2826991), (722, 2270990), (764, 2146145), (779, 2104820), (820, 1999579), (955, 1716916), (1102, 1487890), (1189, 1379020), (1444, 1135495), (1558, 1052410), (1805, 908396), (1910, 858458), (2204, 743945), (2378, 689510), (2755, 595156), (3116, 526205), (3610, 454198), (3629, 451820), (3820, 429229), (3895, 420964), (4756, 344755), (5510, 297578), (5539, 296020), (5945, 275804), (7220, 227099), (7258, 225910), (7790, 210482), (7831, 209380), (10469, 156620), (11020, 148789), (11078, 148010), (11890, 137902), (14516, 112955), (14801, 110780), (15580, 105241), (15662, 104690), (18145, 90364), (20938, 78310), (22156, 74005), (22591, 72580), (23780, 68951), (27695, 59204), (29602, 55390), (31324, 52345), (36290, 45182), (39155, 41876)]