390004480

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{17923}}^1$

素因数の和:17961

約数の個数: 72

約数和(自身を含む): 989189712

約数和(自身を除く): 599185232

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 10880, 17923, 21760, 35846, 71692, 89615, 143384, 179230, 286768, 304691, 358460, 573536, 609382, 716920, 1147072, 1218764, 1433840, 1523455, 2294144, 2437528, 2867680, 3046910, 4588288, 4875056, 5735360, 6093820, 9750112, 11470720, 12187640, 19500224, 22941440, 24375280, 39000448, 48750560, 78000896, 97501120, 195002240, 390004480]

約数ペア:

[(1, 390004480), (2, 195002240), (4, 97501120), (5, 78000896), (8, 48750560), (10, 39000448), (16, 24375280), (17, 22941440), (20, 19500224), (32, 12187640), (34, 11470720), (40, 9750112), (64, 6093820), (68, 5735360), (80, 4875056), (85, 4588288), (128, 3046910), (136, 2867680), (160, 2437528), (170, 2294144), (256, 1523455), (272, 1433840), (320, 1218764), (340, 1147072), (544, 716920), (640, 609382), (680, 573536), (1088, 358460), (1280, 304691), (1360, 286768), (2176, 179230), (2720, 143384), (4352, 89615), (5440, 71692), (10880, 35846), (17923, 21760)]