21771720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1061}}^1$

素因数の和:1100

約数の個数: 128

約数和(自身を含む): 76464000

約数和(自身を除く): 54692280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 54, 57, 60, 72, 76, 90, 95, 108, 114, 120, 135, 152, 171, 180, 190, 216, 228, 270, 285, 342, 360, 380, 456, 513, 540, 570, 684, 760, 855, 1026, 1061, 1080, 1140, 1368, 1710, 2052, 2122, 2280, 2565, 3183, 3420, 4104, 4244, 5130, 5305, 6366, 6840, 8488, 9549, 10260, 10610, 12732, 15915, 19098, 20159, 20520, 21220, 25464, 28647, 31830, 38196, 40318, 42440, 47745, 57294, 60477, 63660, 76392, 80636, 95490, 100795, 114588, 120954, 127320, 143235, 161272, 181431, 190980, 201590, 229176, 241908, 286470, 302385, 362862, 381960, 403180, 483816, 544293, 572940, 604770, 725724, 806360, 907155, 1088586, 1145880, 1209540, 1451448, 1814310, 2177172, 2419080, 2721465, 3628620, 4354344, 5442930, 7257240, 10885860, 21771720]

約数ペア:

[(1, 21771720), (2, 10885860), (3, 7257240), (4, 5442930), (5, 4354344), (6, 3628620), (8, 2721465), (9, 2419080), (10, 2177172), (12, 1814310), (15, 1451448), (18, 1209540), (19, 1145880), (20, 1088586), (24, 907155), (27, 806360), (30, 725724), (36, 604770), (38, 572940), (40, 544293), (45, 483816), (54, 403180), (57, 381960), (60, 362862), (72, 302385), (76, 286470), (90, 241908), (95, 229176), (108, 201590), (114, 190980), (120, 181431), (135, 161272), (152, 143235), (171, 127320), (180, 120954), (190, 114588), (216, 100795), (228, 95490), (270, 80636), (285, 76392), (342, 63660), (360, 60477), (380, 57294), (456, 47745), (513, 42440), (540, 40318), (570, 38196), (684, 31830), (760, 28647), (855, 25464), (1026, 21220), (1061, 20520), (1080, 20159), (1140, 19098), (1368, 15915), (1710, 12732), (2052, 10610), (2122, 10260), (2280, 9549), (2565, 8488), (3183, 6840), (3420, 6366), (4104, 5305), (4244, 5130)]