20140508720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1\times {\mathrm{15467}}^1$

素因数の和:15918

約数の個数: 80

約数和(自身を含む): 48092734368

約数和(自身を除く): 27952225648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 397, 410, 656, 794, 820, 1588, 1640, 1985, 3176, 3280, 3970, 6352, 7940, 15467, 15880, 16277, 30934, 31760, 32554, 61868, 65108, 77335, 81385, 123736, 130216, 154670, 162770, 247472, 260432, 309340, 325540, 618680, 634147, 651080, 1237360, 1268294, 1302160, 2536588, 3170735, 5073176, 6140399, 6341470, 10146352, 12280798, 12682940, 24561596, 25365880, 30701995, 49123192, 50731760, 61403990, 98246384, 122807980, 245615960, 251756359, 491231920, 503512718, 1007025436, 1258781795, 2014050872, 2517563590, 4028101744, 5035127180, 10070254360, 20140508720]

約数ペア:

[(1, 20140508720), (2, 10070254360), (4, 5035127180), (5, 4028101744), (8, 2517563590), (10, 2014050872), (16, 1258781795), (20, 1007025436), (40, 503512718), (41, 491231920), (80, 251756359), (82, 245615960), (164, 122807980), (205, 98246384), (328, 61403990), (397, 50731760), (410, 49123192), (656, 30701995), (794, 25365880), (820, 24561596), (1588, 12682940), (1640, 12280798), (1985, 10146352), (3176, 6341470), (3280, 6140399), (3970, 5073176), (6352, 3170735), (7940, 2536588), (15467, 1302160), (15880, 1268294), (16277, 1237360), (30934, 651080), (31760, 634147), (32554, 618680), (61868, 325540), (65108, 309340), (77335, 260432), (81385, 247472), (123736, 162770), (130216, 154670)]