19821400

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:209

約数の個数: 96

約数和(自身を含む): 49996800

約数和(自身を除く): 30175400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 31, 40, 46, 50, 62, 92, 100, 115, 124, 139, 155, 184, 200, 230, 248, 278, 310, 460, 556, 575, 620, 695, 713, 775, 920, 1112, 1150, 1240, 1390, 1426, 1550, 2300, 2780, 2852, 3100, 3197, 3475, 3565, 4309, 4600, 5560, 5704, 6200, 6394, 6950, 7130, 8618, 12788, 13900, 14260, 15985, 17236, 17825, 21545, 25576, 27800, 28520, 31970, 34472, 35650, 43090, 63940, 71300, 79925, 86180, 99107, 107725, 127880, 142600, 159850, 172360, 198214, 215450, 319700, 396428, 430900, 495535, 639400, 792856, 861800, 991070, 1982140, 2477675, 3964280, 4955350, 9910700, 19821400]

約数ペア:

[(1, 19821400), (2, 9910700), (4, 4955350), (5, 3964280), (8, 2477675), (10, 1982140), (20, 991070), (23, 861800), (25, 792856), (31, 639400), (40, 495535), (46, 430900), (50, 396428), (62, 319700), (92, 215450), (100, 198214), (115, 172360), (124, 159850), (139, 142600), (155, 127880), (184, 107725), (200, 99107), (230, 86180), (248, 79925), (278, 71300), (310, 63940), (460, 43090), (556, 35650), (575, 34472), (620, 31970), (695, 28520), (713, 27800), (775, 25576), (920, 21545), (1112, 17825), (1150, 17236), (1240, 15985), (1390, 14260), (1426, 13900), (1550, 12788), (2300, 8618), (2780, 7130), (2852, 6950), (3100, 6394), (3197, 6200), (3475, 5704), (3565, 5560), (4309, 4600)]