28648750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:119

約数の個数: 80

約数和(自身を含む): 60618096

約数和(自身を除く): 31969346

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 43, 50, 65, 82, 86, 125, 130, 205, 215, 250, 325, 410, 430, 533, 559, 625, 650, 1025, 1066, 1075, 1118, 1250, 1625, 1763, 2050, 2150, 2665, 2795, 3250, 3526, 5125, 5330, 5375, 5590, 8125, 8815, 10250, 10750, 13325, 13975, 16250, 17630, 22919, 25625, 26650, 26875, 27950, 44075, 45838, 51250, 53750, 66625, 69875, 88150, 114595, 133250, 139750, 220375, 229190, 333125, 349375, 440750, 572975, 666250, 698750, 1101875, 1145950, 2203750, 2864875, 5729750, 14324375, 28648750]

約数ペア:

[(1, 28648750), (2, 14324375), (5, 5729750), (10, 2864875), (13, 2203750), (25, 1145950), (26, 1101875), (41, 698750), (43, 666250), (50, 572975), (65, 440750), (82, 349375), (86, 333125), (125, 229190), (130, 220375), (205, 139750), (215, 133250), (250, 114595), (325, 88150), (410, 69875), (430, 66625), (533, 53750), (559, 51250), (625, 45838), (650, 44075), (1025, 27950), (1066, 26875), (1075, 26650), (1118, 25625), (1250, 22919), (1625, 17630), (1763, 16250), (2050, 13975), (2150, 13325), (2665, 10750), (2795, 10250), (3250, 8815), (3526, 8125), (5125, 5590), (5330, 5375)]