278723330

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{39989}}^1$

素因数の和:40054

約数の個数: 32

約数和(自身を含む): 544183920

約数和(自身を除く): 265460590

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 410, 697, 1394, 3485, 6970, 39989, 79978, 199945, 399890, 679813, 1359626, 1639549, 3279098, 3399065, 6798130, 8197745, 16395490, 27872333, 55744666, 139361665, 278723330]

約数ペア:

[(1, 278723330), (2, 139361665), (5, 55744666), (10, 27872333), (17, 16395490), (34, 8197745), (41, 6798130), (82, 3399065), (85, 3279098), (170, 1639549), (205, 1359626), (410, 679813), (697, 399890), (1394, 199945), (3485, 79978), (6970, 39989)]