25121325

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:127

約数の個数: 72

約数和(自身を含む): 47204320

約数和(自身を除く): 22082995

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 61, 75, 85, 95, 183, 255, 285, 289, 305, 323, 425, 475, 867, 915, 969, 1037, 1159, 1275, 1425, 1445, 1525, 1615, 3111, 3477, 4335, 4575, 4845, 5185, 5491, 5795, 7225, 8075, 15555, 16473, 17385, 17629, 19703, 21675, 24225, 25925, 27455, 28975, 52887, 59109, 77775, 82365, 86925, 88145, 98515, 137275, 264435, 295545, 334951, 411825, 440725, 492575, 1004853, 1322175, 1477725, 1674755, 5024265, 8373775, 25121325]

約数ペア:

[(1, 25121325), (3, 8373775), (5, 5024265), (15, 1674755), (17, 1477725), (19, 1322175), (25, 1004853), (51, 492575), (57, 440725), (61, 411825), (75, 334951), (85, 295545), (95, 264435), (183, 137275), (255, 98515), (285, 88145), (289, 86925), (305, 82365), (323, 77775), (425, 59109), (475, 52887), (867, 28975), (915, 27455), (969, 25925), (1037, 24225), (1159, 21675), (1275, 19703), (1425, 17629), (1445, 17385), (1525, 16473), (1615, 15555), (3111, 8075), (3477, 7225), (4335, 5795), (4575, 5491), (4845, 5185)]