18818550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:139

約数の個数: 144

約数和(自身を含む): 55710720

約数和(自身を除く): 36892170

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 30, 31, 38, 45, 50, 57, 62, 71, 75, 90, 93, 95, 114, 142, 150, 155, 171, 186, 190, 213, 225, 279, 285, 310, 342, 355, 426, 450, 465, 475, 558, 570, 589, 639, 710, 775, 855, 930, 950, 1065, 1178, 1278, 1349, 1395, 1425, 1550, 1710, 1767, 1775, 2130, 2201, 2325, 2698, 2790, 2850, 2945, 3195, 3534, 3550, 4047, 4275, 4402, 4650, 5301, 5325, 5890, 6390, 6603, 6745, 6975, 8094, 8550, 8835, 10602, 10650, 11005, 12141, 13206, 13490, 13950, 14725, 15975, 17670, 19809, 20235, 22010, 24282, 26505, 29450, 31950, 33015, 33725, 39618, 40470, 41819, 44175, 53010, 55025, 60705, 66030, 67450, 83638, 88350, 99045, 101175, 110050, 121410, 125457, 132525, 165075, 198090, 202350, 209095, 250914, 265050, 303525, 330150, 376371, 418190, 495225, 607050, 627285, 752742, 990450, 1045475, 1254570, 1881855, 2090950, 3136425, 3763710, 6272850, 9409275, 18818550]

約数ペア:

[(1, 18818550), (2, 9409275), (3, 6272850), (5, 3763710), (6, 3136425), (9, 2090950), (10, 1881855), (15, 1254570), (18, 1045475), (19, 990450), (25, 752742), (30, 627285), (31, 607050), (38, 495225), (45, 418190), (50, 376371), (57, 330150), (62, 303525), (71, 265050), (75, 250914), (90, 209095), (93, 202350), (95, 198090), (114, 165075), (142, 132525), (150, 125457), (155, 121410), (171, 110050), (186, 101175), (190, 99045), (213, 88350), (225, 83638), (279, 67450), (285, 66030), (310, 60705), (342, 55025), (355, 53010), (426, 44175), (450, 41819), (465, 40470), (475, 39618), (558, 33725), (570, 33015), (589, 31950), (639, 29450), (710, 26505), (775, 24282), (855, 22010), (930, 20235), (950, 19809), (1065, 17670), (1178, 15975), (1278, 14725), (1349, 13950), (1395, 13490), (1425, 13206), (1550, 12141), (1710, 11005), (1767, 10650), (1775, 10602), (2130, 8835), (2201, 8550), (2325, 8094), (2698, 6975), (2790, 6745), (2850, 6603), (2945, 6390), (3195, 5890), (3534, 5325), (3550, 5301), (4047, 4650), (4275, 4402)]