21666060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 50982516

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 47, 52, 60, 65, 78, 90, 94, 117, 130, 141, 156, 180, 188, 195, 197, 234, 235, 260, 282, 390, 394, 423, 468, 470, 564, 585, 591, 611, 705, 780, 788, 846, 940, 985, 1170, 1182, 1222, 1410, 1692, 1773, 1833, 1970, 2115, 2340, 2364, 2444, 2561, 2820, 2955, 3055, 3546, 3666, 3940, 4230, 5122, 5499, 5910, 6110, 7092, 7332, 7683, 8460, 8865, 9165, 9259, 10244, 10998, 11820, 12220, 12805, 15366, 17730, 18330, 18518, 21996, 23049, 25610, 27495, 27777, 30732, 35460, 36660, 37036, 38415, 46098, 46295, 51220, 54990, 55554, 76830, 83331, 92196, 92590, 109980, 111108, 115245, 120367, 138885, 153660, 166662, 185180, 230490, 240734, 277770, 333324, 361101, 416655, 460980, 481468, 555540, 601835, 722202, 833310, 1083303, 1203670, 1444404, 1666620, 1805505, 2166606, 2407340, 3611010, 4333212, 5416515, 7222020, 10833030, 21666060]

約数ペア:

[(1, 21666060), (2, 10833030), (3, 7222020), (4, 5416515), (5, 4333212), (6, 3611010), (9, 2407340), (10, 2166606), (12, 1805505), (13, 1666620), (15, 1444404), (18, 1203670), (20, 1083303), (26, 833310), (30, 722202), (36, 601835), (39, 555540), (45, 481468), (47, 460980), (52, 416655), (60, 361101), (65, 333324), (78, 277770), (90, 240734), (94, 230490), (117, 185180), (130, 166662), (141, 153660), (156, 138885), (180, 120367), (188, 115245), (195, 111108), (197, 109980), (234, 92590), (235, 92196), (260, 83331), (282, 76830), (390, 55554), (394, 54990), (423, 51220), (468, 46295), (470, 46098), (564, 38415), (585, 37036), (591, 36660), (611, 35460), (705, 30732), (780, 27777), (788, 27495), (846, 25610), (940, 23049), (985, 21996), (1170, 18518), (1182, 18330), (1222, 17730), (1410, 15366), (1692, 12805), (1773, 12220), (1833, 11820), (1970, 10998), (2115, 10244), (2340, 9259), (2364, 9165), (2444, 8865), (2561, 8460), (2820, 7683), (2955, 7332), (3055, 7092), (3546, 6110), (3666, 5910), (3940, 5499), (4230, 5122)]