2018201990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{503}}^1$

素因数の和:634

約数の個数: 96

約数和(自身を含む): 4396363776

約数和(自身を除く): 2378161786

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 43, 62, 70, 86, 155, 215, 217, 301, 310, 430, 434, 503, 602, 1006, 1085, 1333, 1505, 1849, 2170, 2515, 2666, 3010, 3521, 3698, 5030, 6665, 7042, 9245, 9331, 12943, 13330, 15593, 17605, 18490, 18662, 21629, 25886, 31186, 35210, 43258, 46655, 57319, 64715, 77965, 93310, 108145, 109151, 114638, 129430, 151403, 155930, 216290, 218302, 286595, 302806, 401233, 545755, 573190, 670499, 757015, 802466, 930047, 1091510, 1340998, 1514030, 1860094, 2006165, 3352495, 4012330, 4650235, 4693493, 6510329, 6704990, 9300470, 9386986, 13020658, 23467465, 28831457, 32551645, 46934930, 57662914, 65103290, 144157285, 201820199, 288314570, 403640398, 1009100995, 2018201990]

約数ペア:

[(1, 2018201990), (2, 1009100995), (5, 403640398), (7, 288314570), (10, 201820199), (14, 144157285), (31, 65103290), (35, 57662914), (43, 46934930), (62, 32551645), (70, 28831457), (86, 23467465), (155, 13020658), (215, 9386986), (217, 9300470), (301, 6704990), (310, 6510329), (430, 4693493), (434, 4650235), (503, 4012330), (602, 3352495), (1006, 2006165), (1085, 1860094), (1333, 1514030), (1505, 1340998), (1849, 1091510), (2170, 930047), (2515, 802466), (2666, 757015), (3010, 670499), (3521, 573190), (3698, 545755), (5030, 401233), (6665, 302806), (7042, 286595), (9245, 218302), (9331, 216290), (12943, 155930), (13330, 151403), (15593, 129430), (17605, 114638), (18490, 109151), (18662, 108145), (21629, 93310), (25886, 77965), (31186, 64715), (35210, 57319), (43258, 46655)]