20959980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20549}}^1$

素因数の和:20578

約数の個数: 48

約数和(自身を含む): 62143200

約数和(自身を除く): 41183220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 20549, 41098, 61647, 82196, 102745, 123294, 205490, 246588, 308235, 349333, 410980, 616470, 698666, 1047999, 1232940, 1397332, 1746665, 2095998, 3493330, 4191996, 5239995, 6986660, 10479990, 20959980]

約数ペア:

[(1, 20959980), (2, 10479990), (3, 6986660), (4, 5239995), (5, 4191996), (6, 3493330), (10, 2095998), (12, 1746665), (15, 1397332), (17, 1232940), (20, 1047999), (30, 698666), (34, 616470), (51, 410980), (60, 349333), (68, 308235), (85, 246588), (102, 205490), (170, 123294), (204, 102745), (255, 82196), (340, 61647), (510, 41098), (1020, 20549)]