28747000

素因数分解:

$2^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 128

約数和(自身を含む): 75816000

約数和(自身を除く): 47069000

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 25, 34, 38, 40, 50, 68, 76, 85, 89, 95, 100, 125, 136, 152, 170, 178, 190, 200, 250, 323, 340, 356, 380, 425, 445, 475, 500, 646, 680, 712, 760, 850, 890, 950, 1000, 1292, 1513, 1615, 1691, 1700, 1780, 1900, 2125, 2225, 2375, 2584, 3026, 3230, 3382, 3400, 3560, 3800, 4250, 4450, 4750, 6052, 6460, 6764, 7565, 8075, 8455, 8500, 8900, 9500, 11125, 12104, 12920, 13528, 15130, 16150, 16910, 17000, 17800, 19000, 22250, 28747, 30260, 32300, 33820, 37825, 40375, 42275, 44500, 57494, 60520, 64600, 67640, 75650, 80750, 84550, 89000, 114988, 143735, 151300, 161500, 169100, 189125, 211375, 229976, 287470, 302600, 323000, 338200, 378250, 422750, 574940, 718675, 756500, 845500, 1149880, 1437350, 1513000, 1691000, 2874700, 3593375, 5749400, 7186750, 14373500, 28747000]

約数ペア:

[(1, 28747000), (2, 14373500), (4, 7186750), (5, 5749400), (8, 3593375), (10, 2874700), (17, 1691000), (19, 1513000), (20, 1437350), (25, 1149880), (34, 845500), (38, 756500), (40, 718675), (50, 574940), (68, 422750), (76, 378250), (85, 338200), (89, 323000), (95, 302600), (100, 287470), (125, 229976), (136, 211375), (152, 189125), (170, 169100), (178, 161500), (190, 151300), (200, 143735), (250, 114988), (323, 89000), (340, 84550), (356, 80750), (380, 75650), (425, 67640), (445, 64600), (475, 60520), (500, 57494), (646, 44500), (680, 42275), (712, 40375), (760, 37825), (850, 33820), (890, 32300), (950, 30260), (1000, 28747), (1292, 22250), (1513, 19000), (1615, 17800), (1691, 17000), (1700, 16910), (1780, 16150), (1900, 15130), (2125, 13528), (2225, 12920), (2375, 12104), (2584, 11125), (3026, 9500), (3230, 8900), (3382, 8500), (3400, 8455), (3560, 8075), (3800, 7565), (4250, 6764), (4450, 6460), (4750, 6052)]