28605780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{311}}^1$

素因数の和:406

約数の個数: 144

約数和(自身を含む): 100848384

約数和(自身を除く): 72242604

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 73, 84, 90, 105, 126, 140, 146, 180, 210, 219, 252, 292, 311, 315, 365, 420, 438, 511, 622, 630, 657, 730, 876, 933, 1022, 1095, 1244, 1260, 1314, 1460, 1533, 1555, 1866, 2044, 2177, 2190, 2555, 2628, 2799, 3066, 3110, 3285, 3732, 4354, 4380, 4599, 4665, 5110, 5598, 6132, 6220, 6531, 6570, 7665, 8708, 9198, 9330, 10220, 10885, 11196, 13062, 13140, 13995, 15330, 18396, 18660, 19593, 21770, 22703, 22995, 26124, 27990, 30660, 32655, 39186, 43540, 45406, 45990, 55980, 65310, 68109, 78372, 90812, 91980, 97965, 113515, 130620, 136218, 158921, 195930, 204327, 227030, 272436, 317842, 340545, 391860, 408654, 454060, 476763, 635684, 681090, 794605, 817308, 953526, 1021635, 1362180, 1430289, 1589210, 1907052, 2043270, 2383815, 2860578, 3178420, 4086540, 4767630, 5721156, 7151445, 9535260, 14302890, 28605780]

約数ペア:

[(1, 28605780), (2, 14302890), (3, 9535260), (4, 7151445), (5, 5721156), (6, 4767630), (7, 4086540), (9, 3178420), (10, 2860578), (12, 2383815), (14, 2043270), (15, 1907052), (18, 1589210), (20, 1430289), (21, 1362180), (28, 1021635), (30, 953526), (35, 817308), (36, 794605), (42, 681090), (45, 635684), (60, 476763), (63, 454060), (70, 408654), (73, 391860), (84, 340545), (90, 317842), (105, 272436), (126, 227030), (140, 204327), (146, 195930), (180, 158921), (210, 136218), (219, 130620), (252, 113515), (292, 97965), (311, 91980), (315, 90812), (365, 78372), (420, 68109), (438, 65310), (511, 55980), (622, 45990), (630, 45406), (657, 43540), (730, 39186), (876, 32655), (933, 30660), (1022, 27990), (1095, 26124), (1244, 22995), (1260, 22703), (1314, 21770), (1460, 19593), (1533, 18660), (1555, 18396), (1866, 15330), (2044, 13995), (2177, 13140), (2190, 13062), (2555, 11196), (2628, 10885), (2799, 10220), (3066, 9330), (3110, 9198), (3285, 8708), (3732, 7665), (4354, 6570), (4380, 6531), (4599, 6220), (4665, 6132), (5110, 5598)]