21013290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{349}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 56448000

約数和(自身を除く): 35434710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 223, 270, 349, 446, 669, 698, 1047, 1115, 1338, 1745, 2007, 2094, 2230, 3141, 3345, 3490, 4014, 5235, 6021, 6282, 6690, 9423, 10035, 10470, 12042, 15705, 18846, 20070, 30105, 31410, 47115, 60210, 77827, 94230, 155654, 233481, 389135, 466962, 700443, 778270, 1167405, 1400886, 2101329, 2334810, 3502215, 4202658, 7004430, 10506645, 21013290]

約数ペア:

[(1, 21013290), (2, 10506645), (3, 7004430), (5, 4202658), (6, 3502215), (9, 2334810), (10, 2101329), (15, 1400886), (18, 1167405), (27, 778270), (30, 700443), (45, 466962), (54, 389135), (90, 233481), (135, 155654), (223, 94230), (270, 77827), (349, 60210), (446, 47115), (669, 31410), (698, 30105), (1047, 20070), (1115, 18846), (1338, 15705), (1745, 12042), (2007, 10470), (2094, 10035), (2230, 9423), (3141, 6690), (3345, 6282), (3490, 6021), (4014, 5235)]