28379800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^2\times {\mathrm{491}}^1$

素因数の和:541

約数の個数: 72

約数和(自身を含む): 70235460

約数和(自身を除く): 41855660

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 289, 340, 425, 491, 578, 680, 850, 982, 1156, 1445, 1700, 1964, 2312, 2455, 2890, 3400, 3928, 4910, 5780, 7225, 8347, 9820, 11560, 12275, 14450, 16694, 19640, 24550, 28900, 33388, 41735, 49100, 57800, 66776, 83470, 98200, 141899, 166940, 208675, 283798, 333880, 417350, 567596, 709495, 834700, 1135192, 1418990, 1669400, 2837980, 3547475, 5675960, 7094950, 14189900, 28379800]

約数ペア:

[(1, 28379800), (2, 14189900), (4, 7094950), (5, 5675960), (8, 3547475), (10, 2837980), (17, 1669400), (20, 1418990), (25, 1135192), (34, 834700), (40, 709495), (50, 567596), (68, 417350), (85, 333880), (100, 283798), (136, 208675), (170, 166940), (200, 141899), (289, 98200), (340, 83470), (425, 66776), (491, 57800), (578, 49100), (680, 41735), (850, 33388), (982, 28900), (1156, 24550), (1445, 19640), (1700, 16694), (1964, 14450), (2312, 12275), (2455, 11560), (2890, 9820), (3400, 8347), (3928, 7225), (4910, 5780)]