78801970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 163459296

約数和(自身を除く): 84657326

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 181, 197, 221, 362, 394, 442, 905, 985, 1105, 1810, 1970, 2210, 2353, 2561, 3077, 3349, 4706, 5122, 6154, 6698, 11765, 12805, 15385, 16745, 23530, 25610, 30770, 33490, 35657, 40001, 43537, 71314, 80002, 87074, 178285, 200005, 217685, 356570, 400010, 435370, 463541, 606169, 927082, 1212338, 2317705, 3030845, 4635410, 6061690, 7880197, 15760394, 39400985, 78801970]

約数ペア:

[(1, 78801970), (2, 39400985), (5, 15760394), (10, 7880197), (13, 6061690), (17, 4635410), (26, 3030845), (34, 2317705), (65, 1212338), (85, 927082), (130, 606169), (170, 463541), (181, 435370), (197, 400010), (221, 356570), (362, 217685), (394, 200005), (442, 178285), (905, 87074), (985, 80002), (1105, 71314), (1810, 43537), (1970, 40001), (2210, 35657), (2353, 33490), (2561, 30770), (3077, 25610), (3349, 23530), (4706, 16745), (5122, 15385), (6154, 12805), (6698, 11765)]