21097125

素因数分解:

$3^3\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:97

約数の個数: 128

約数和(自身を含む): 47923200

約数和(自身を除く): 26826075

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 27, 35, 45, 47, 57, 63, 75, 95, 105, 125, 133, 135, 141, 171, 175, 189, 225, 235, 285, 315, 329, 375, 399, 423, 475, 513, 525, 665, 675, 705, 855, 875, 893, 945, 987, 1125, 1175, 1197, 1269, 1425, 1575, 1645, 1995, 2115, 2375, 2565, 2625, 2679, 2961, 3325, 3375, 3525, 3591, 4275, 4465, 4725, 4935, 5875, 5985, 6251, 6345, 7125, 7875, 8037, 8225, 8883, 9975, 10575, 12825, 13395, 14805, 16625, 17625, 17955, 18753, 21375, 22325, 23625, 24111, 24675, 29925, 31255, 31725, 40185, 41125, 44415, 49875, 52875, 56259, 64125, 66975, 74025, 89775, 93765, 111625, 120555, 123375, 149625, 156275, 158625, 168777, 200925, 222075, 281295, 334875, 370125, 448875, 468825, 602775, 781375, 843885, 1004625, 1110375, 1406475, 2344125, 3013875, 4219425, 7032375, 21097125]

約数ペア:

[(1, 21097125), (3, 7032375), (5, 4219425), (7, 3013875), (9, 2344125), (15, 1406475), (19, 1110375), (21, 1004625), (25, 843885), (27, 781375), (35, 602775), (45, 468825), (47, 448875), (57, 370125), (63, 334875), (75, 281295), (95, 222075), (105, 200925), (125, 168777), (133, 158625), (135, 156275), (141, 149625), (171, 123375), (175, 120555), (189, 111625), (225, 93765), (235, 89775), (285, 74025), (315, 66975), (329, 64125), (375, 56259), (399, 52875), (423, 49875), (475, 44415), (513, 41125), (525, 40185), (665, 31725), (675, 31255), (705, 29925), (855, 24675), (875, 24111), (893, 23625), (945, 22325), (987, 21375), (1125, 18753), (1175, 17955), (1197, 17625), (1269, 16625), (1425, 14805), (1575, 13395), (1645, 12825), (1995, 10575), (2115, 9975), (2375, 8883), (2565, 8225), (2625, 8037), (2679, 7875), (2961, 7125), (3325, 6345), (3375, 6251), (3525, 5985), (3591, 5875), (4275, 4935), (4465, 4725)]