217499620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:545

約数の個数: 72

約数和(自身を含む): 498513960

約数和(自身を除く): 281014340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 229, 260, 281, 338, 458, 562, 676, 845, 916, 1124, 1145, 1405, 1690, 2290, 2810, 2977, 3380, 3653, 4580, 5620, 5954, 7306, 11908, 14612, 14885, 18265, 29770, 36530, 38701, 47489, 59540, 64349, 73060, 77402, 94978, 128698, 154804, 189956, 193505, 237445, 257396, 321745, 387010, 474890, 643490, 774020, 836537, 949780, 1286980, 1673074, 3346148, 4182685, 8365370, 10874981, 16730740, 21749962, 43499924, 54374905, 108749810, 217499620]

約数ペア:

[(1, 217499620), (2, 108749810), (4, 54374905), (5, 43499924), (10, 21749962), (13, 16730740), (20, 10874981), (26, 8365370), (52, 4182685), (65, 3346148), (130, 1673074), (169, 1286980), (229, 949780), (260, 836537), (281, 774020), (338, 643490), (458, 474890), (562, 387010), (676, 321745), (845, 257396), (916, 237445), (1124, 193505), (1145, 189956), (1405, 154804), (1690, 128698), (2290, 94978), (2810, 77402), (2977, 73060), (3380, 64349), (3653, 59540), (4580, 47489), (5620, 38701), (5954, 36530), (7306, 29770), (11908, 18265), (14612, 14885)]