19864180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 96

約数和(自身を含む): 51609600

約数和(自身を除く): 31745420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 31, 35, 46, 62, 70, 92, 115, 124, 140, 155, 161, 199, 217, 230, 310, 322, 398, 434, 460, 620, 644, 713, 796, 805, 868, 995, 1085, 1393, 1426, 1610, 1990, 2170, 2786, 2852, 3220, 3565, 3980, 4340, 4577, 4991, 5572, 6169, 6965, 7130, 9154, 9982, 12338, 13930, 14260, 18308, 19964, 22885, 24676, 24955, 27860, 30845, 32039, 43183, 45770, 49910, 61690, 64078, 86366, 91540, 99820, 123380, 128156, 141887, 160195, 172732, 215915, 283774, 320390, 431830, 567548, 640780, 709435, 863660, 993209, 1418870, 1986418, 2837740, 3972836, 4966045, 9932090, 19864180]

約数ペア:

[(1, 19864180), (2, 9932090), (4, 4966045), (5, 3972836), (7, 2837740), (10, 1986418), (14, 1418870), (20, 993209), (23, 863660), (28, 709435), (31, 640780), (35, 567548), (46, 431830), (62, 320390), (70, 283774), (92, 215915), (115, 172732), (124, 160195), (140, 141887), (155, 128156), (161, 123380), (199, 99820), (217, 91540), (230, 86366), (310, 64078), (322, 61690), (398, 49910), (434, 45770), (460, 43183), (620, 32039), (644, 30845), (713, 27860), (796, 24955), (805, 24676), (868, 22885), (995, 19964), (1085, 18308), (1393, 14260), (1426, 13930), (1610, 12338), (1990, 9982), (2170, 9154), (2786, 7130), (2852, 6965), (3220, 6169), (3565, 5572), (3980, 4991), (4340, 4577)]