28717740

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1$

素因数の和:354

約数の個数: 144

約数和(自身を含む): 95397120

約数和(自身を除く): 66679380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 243, 270, 285, 311, 324, 342, 380, 405, 486, 513, 540, 570, 622, 684, 810, 855, 933, 972, 1026, 1140, 1215, 1244, 1539, 1555, 1620, 1710, 1866, 2052, 2430, 2565, 2799, 3078, 3110, 3420, 3732, 4617, 4665, 4860, 5130, 5598, 5909, 6156, 6220, 7695, 8397, 9234, 9330, 10260, 11196, 11818, 13995, 15390, 16794, 17727, 18468, 18660, 23085, 23636, 25191, 27990, 29545, 30780, 33588, 35454, 41985, 46170, 50382, 53181, 55980, 59090, 70908, 75573, 83970, 88635, 92340, 100764, 106362, 118180, 125955, 151146, 159543, 167940, 177270, 212724, 251910, 265905, 302292, 319086, 354540, 377865, 478629, 503820, 531810, 638172, 755730, 797715, 957258, 1063620, 1435887, 1511460, 1595430, 1914516, 2393145, 2871774, 3190860, 4786290, 5743548, 7179435, 9572580, 14358870, 28717740]

約数ペア:

[(1, 28717740), (2, 14358870), (3, 9572580), (4, 7179435), (5, 5743548), (6, 4786290), (9, 3190860), (10, 2871774), (12, 2393145), (15, 1914516), (18, 1595430), (19, 1511460), (20, 1435887), (27, 1063620), (30, 957258), (36, 797715), (38, 755730), (45, 638172), (54, 531810), (57, 503820), (60, 478629), (76, 377865), (81, 354540), (90, 319086), (95, 302292), (108, 265905), (114, 251910), (135, 212724), (162, 177270), (171, 167940), (180, 159543), (190, 151146), (228, 125955), (243, 118180), (270, 106362), (285, 100764), (311, 92340), (324, 88635), (342, 83970), (380, 75573), (405, 70908), (486, 59090), (513, 55980), (540, 53181), (570, 50382), (622, 46170), (684, 41985), (810, 35454), (855, 33588), (933, 30780), (972, 29545), (1026, 27990), (1140, 25191), (1215, 23636), (1244, 23085), (1539, 18660), (1555, 18468), (1620, 17727), (1710, 16794), (1866, 15390), (2052, 13995), (2430, 11818), (2565, 11196), (2799, 10260), (3078, 9330), (3110, 9234), (3420, 8397), (3732, 7695), (4617, 6220), (4665, 6156), (4860, 5909), (5130, 5598)]